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psm_ep.c
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psm_ep.c
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/*
* Copyright (c) 2013. Intel Corporation. All rights reserved.
* Copyright (c) 2006-2012. QLogic Corporation. All rights reserved.
* Copyright (c) 2003-2006, PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sched.h> // cpu_set
#include <ctype.h> // isalpha
#include "psm_user.h"
#include "psm_mq_internal.h"
#include "psm_am_internal.h"
/*
* Endpoint management
*/
psm_ep_t psmi_opened_endpoint = NULL;
int psmi_opened_endpoint_count = 0;
static psm_error_t psmi_ep_open_device(const psm_ep_t ep,
const struct psm_ep_open_opts *opts,
const psm_uuid_t unique_job_key,
struct psmi_context *context,
psm_epid_t *epid);
/*
* Device managment
*
* PSM uses "devices" as components to manage communication to self, to peers
* reachable via shared memory and finally to peers reachable only through
* ipath.
*
* By default, PSMI_DEVICES_DEFAULT establishes the bind order a component is
* tested for reachability to each peer. First self, then shm and finally
* ipath. The order should really only affect endpoints that happen to be on
* the same node. PSM will correctly detect that two endpoints are on the same
* node even though they may be using different host interfaces.
*/
#define PSMI_DEVICES_DEFAULT "self,shm,ipath"
static psm_error_t psmi_parse_devices(int devices[PTL_MAX_INIT],
const char *devstr);
static int psmi_device_is_enabled(const int devices[PTL_MAX_INIT],
int devid);
int psmi_ep_device_is_enabled(const psm_ep_t ep, int devid);
psm_error_t
__psm_ep_num_devunits(uint32_t *num_units_o)
{
static int num_units = -1;
PSMI_ERR_UNLESS_INITIALIZED(NULL);
if (num_units == -1) {
num_units = ipath_get_num_units();
if (num_units == -1)
num_units = 0;
}
*num_units_o = (uint32_t) num_units;
return PSM_OK;
}
PSMI_API_DECL(psm_ep_num_devunits)
static int
cmpfunc(const void *p1, const void *p2)
{
uint64_t a = ((uint64_t *)p1)[0];
uint64_t b = ((uint64_t *)p2)[0];
if (a < b) return -1;
if (a == b) return 0;
return 1;
}
static psm_error_t
psmi_ep_multirail(int *num_rails, uint32_t *unit, uint16_t *port)
{
uint32_t num_units;
uint64_t gid_hi, gid_lo;
int i, j, ret, count=0;
char *env;
psm_error_t err = PSM_OK;
uint64_t gidh[IPATH_MAX_UNIT][3];
env = getenv("PSM_MULTIRAIL");
if (!env || atoi(env) == 0) {
*num_rails = 0;
return err;
}
#ifdef __MIC__
env = getenv("MPI_LOCALRANKID");
if (!env || atoi(env) == 0) {
_IPATH_INFO("PSM_MULTIRAIL is not supported and "
"ignored for this PSM mic version.\n");
}
*num_rails = 0;
return err;
#endif
/*
* map is in format: unit:port,unit:port,...
*/
if ((env = getenv("PSM_MULTIRAIL_MAP"))) {
if (sscanf(env, "%d:%d", &i, &j) == 2) {
char *comma = strchr(env, ',');
unit[count] = i;
port[count] = j;
count++;
while (comma) {
if (sscanf(comma, ",%d:%d", &i, &j) != 2) {
break;
}
unit[count] = i;
port[count] = j;
count++;
if (count == IPATH_MAX_UNIT) break;
comma = strchr(comma+1, ',');
}
}
*num_rails = count;
/*
* Check if any of the port is not usable.
*/
for (i = 0; i < count; i++) {
ret = ipath_get_port_lid(unit[i], port[i]);
if (ret == -1) {
err = psmi_handle_error(NULL, PSM_EP_DEVICE_FAILURE,
"Couldn't get lid for unit %d:%d",
unit[i], port[i]);
return err;
}
ret = ipath_get_port_gid(unit[i], port[i], &gid_hi, &gid_lo);
if (ret == -1) {
err = psmi_handle_error(NULL, PSM_EP_DEVICE_FAILURE,
"Couldn't get gid for unit %d:%d",
unit[i], port[i]);
return err;
}
}
return err;
}
if ((err = psm_ep_num_devunits(&num_units))) {
return err;
}
if (num_units > IPATH_MAX_UNIT) {
_IPATH_INFO("Found %d units, max %d units are supported, use %d\n",
num_units, IPATH_MAX_UNIT, IPATH_MAX_UNIT);
num_units = IPATH_MAX_UNIT;
}
/*
* Get all the ports with a valid lid and gid, one per unit.
* we don't know which number is a valid unit, we just loop
* over all supported numbers.
*/
for (i = 0; i < IPATH_MAX_UNIT; i++) {
for (j = 1; j <= IPATH_MAX_PORT; j++) {
ret = ipath_get_port_lid(i, j);
if (ret == -1) continue;
ret = ipath_get_port_gid(i, j, &gid_hi, &gid_lo);
if (ret == -1) continue;
gidh[count][0] = gid_hi;
gidh[count][1] = i;
gidh[count][2] = j;
count++;
break;
}
if (count == num_units) break;
}
/*
* Sort all the ports with gidh from small to big.
* This is for multiple fabrics, and we use fabric with the
* smallest gid to make the master connection.
*/
qsort(gidh, count, sizeof(uint64_t)*3, cmpfunc);
for (i = 0; i < count; i++) {
unit[i] = (uint32_t)gidh[i][1];
port[i] = (uint16_t)(uint32_t)gidh[i][2];
}
*num_rails = count;
return err;
}
static psm_error_t
psmi_ep_devlids(uint16_t **lids, uint32_t *num_lids_o,
uint64_t my_gid_hi, uint64_t my_gid_lo)
{
static uint16_t *ipath_lids = NULL;
static uint32_t nlids;
uint32_t num_units;
int i;
psm_error_t err = PSM_OK;
PSMI_ERR_UNLESS_INITIALIZED(NULL);
if (ipath_lids == NULL) {
if ((err = psm_ep_num_devunits(&num_units)))
goto fail;
ipath_lids = (uint16_t *)
psmi_calloc(PSMI_EP_NONE, UNDEFINED, num_units*IPATH_MAX_PORT,
sizeof(uint16_t));
if (ipath_lids == NULL) {
err = psmi_handle_error(NULL, PSM_NO_MEMORY,
"Couldn't allocate memory for dev_lids structure");
goto fail;
}
for (i = 0; i < IPATH_MAX_UNIT; i++) {
int j;
for (j = 1; j <= IPATH_MAX_PORT; j++) {
int lid = ipath_get_port_lid(i, j);
int ret;
uint64_t gid_hi = 0, gid_lo = 0;
if (lid == -1) continue;
ret = ipath_get_port_gid(i, j, &gid_hi, &gid_lo);
if (ret == -1)
continue;
else if (my_gid_hi != gid_hi) {
_IPATH_VDBG("LID %d, unit %d, port %d, "
"mismatched GID %llx:%llx and "
"%llx:%llx\n",
lid, i, j,
(unsigned long long) gid_hi,
(unsigned long long) gid_lo,
(unsigned long long) my_gid_hi,
(unsigned long long) my_gid_lo);
continue;
}
_IPATH_VDBG("LID %d, unit %d, port %d, "
"matching GID %llx:%llx and "
"%llx:%llx\n", lid, i, j,
(unsigned long long) gid_hi,
(unsigned long long) gid_lo,
(unsigned long long) my_gid_hi,
(unsigned long long) my_gid_lo);
ipath_lids[nlids++] = (uint16_t) lid;
}
}
if (nlids == 0) {
err = psmi_handle_error(NULL, PSM_EP_DEVICE_FAILURE,
"Couldn't get lid&gid from any unit/port");
goto fail;
}
}
*lids = ipath_lids;
*num_lids_o = nlids;
fail:
return err;
}
uint64_t
__psm_epid_nid(psm_epid_t epid)
{
return PSMI_EPID_GET_LID(epid);
}
PSMI_API_DECL(psm_epid_nid)
/* Currently not exposed to users, we don't acknowledge the existence of
* subcontexts */
uint64_t
psmi_epid_subcontext(psm_epid_t epid)
{
return PSMI_EPID_GET_SUBCONTEXT(epid);
}
/* Currently not exposed to users, we don't acknowledge the existence of
* service levels and HCA types encoding within epids. This may require
* changing to expose SLs
*/
uint64_t
psmi_epid_hca_type(psm_epid_t epid)
{
return PSMI_EPID_GET_HCATYPE(epid);
}
uint64_t
psmi_epid_sl(psm_epid_t epid)
{
return PSMI_EPID_GET_SL(epid);
}
uint64_t
__psm_epid_context(psm_epid_t epid)
{
return PSMI_EPID_GET_CONTEXT(epid);
}
PSMI_API_DECL(psm_epid_context)
uint64_t
__psm_epid_port(psm_epid_t epid)
{
return __psm_epid_context(epid);
}
PSMI_API_DECL(psm_epid_port)
psm_error_t
__psm_ep_query (int *num_of_epinfo, psm_epinfo_t *array_of_epinfo)
{
psm_error_t err = PSM_OK;
int i;
psm_ep_t ep;
PSMI_ERR_UNLESS_INITIALIZED(NULL);
if (*num_of_epinfo <= 0) {
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid psm_ep_query parameters");
return err;
}
if (psmi_opened_endpoint == NULL) {
err = psmi_handle_error(NULL, PSM_EP_WAS_CLOSED,
"PSM Endpoint is closed or does not exist");
return err;
}
ep = psmi_opened_endpoint;
for (i = 0; i < *num_of_epinfo; i++) {
if (ep == NULL) break;
array_of_epinfo[i].ep = ep;
array_of_epinfo[i].epid = ep->epid;
memcpy(array_of_epinfo[i].uuid,
(void *) ep->key, sizeof(psm_uuid_t));
psmi_uuid_unparse(ep->key, array_of_epinfo[i].uuid_str);
ep = ep->user_ep_next;
}
*num_of_epinfo = i;
return err;
}
PSMI_API_DECL(psm_ep_query)
psm_error_t
__psm_ep_epid_lookup (psm_epid_t epid, psm_epconn_t *epconn)
{
psm_error_t err = PSM_OK;
psm_epaddr_t epaddr;
psm_ep_t ep;
PSMI_ERR_UNLESS_INITIALIZED(NULL);
/* Need to have an opened endpoint before we can resolve epids */
if (psmi_opened_endpoint == NULL) {
err = psmi_handle_error(NULL, PSM_EP_WAS_CLOSED,
"PSM Endpoint is closed or does not exist");
return err;
}
ep = psmi_opened_endpoint;
while (ep) {
epaddr = psmi_epid_lookup(ep, epid);
if (!epaddr) {
/* Search over SL values for bug 122239. Note that function
* ips_get_addr_from_epid() converts a base epid to an epaddr,
* which can then be used to get the correct epid for this flow.
* However, that function is at the IPS level and not accessible
* from here without breaking the layering. */
uint64_t lid, context, subcontext, hca_type, sl, try_sl;
psm_epid_t try_epid;
lid = PSMI_EPID_GET_LID(epid);
context = PSMI_EPID_GET_CONTEXT(epid);
subcontext = PSMI_EPID_GET_SUBCONTEXT(epid);
hca_type = PSMI_EPID_GET_HCATYPE(epid);
sl = PSMI_EPID_GET_SL(epid);
for (try_sl = 0; !epaddr && try_sl < 16; try_sl++) {
if (try_sl != sl) {
try_epid = PSMI_EPID_PACK_EXT(lid, context, subcontext,
hca_type, try_sl);
epaddr = psmi_epid_lookup(psmi_opened_endpoint, try_epid);
}
}
if (!epaddr) {
ep = ep->user_ep_next;
continue;
}
}
/* Found connection for epid. Return info about endpoint to caller. */
psmi_assert_always(epaddr->ep == ep);
epconn->addr = epaddr;
epconn->ep = epaddr->ep;
epconn->mq = epaddr->ep->mq;
return err;
}
err = psmi_handle_error(NULL, PSM_EPID_UNKNOWN,
"Endpoint connection status unknown");
return err;
}
PSMI_API_DECL(psm_ep_epid_lookup);
psm_error_t
__psm_ep_epid_share_memory(psm_ep_t ep, psm_epid_t epid, int *result_o)
{
uint32_t num_lids = 0;
uint16_t *lids = NULL;
int i;
uint16_t epid_lid;
int result = 0;
psm_error_t err;
psmi_assert_always(ep != NULL);
PSMI_ERR_UNLESS_INITIALIZED(ep);
epid_lid = (uint16_t) psm_epid_nid(epid);
/* If we're in non-ipath mode, done bother listing lids */
if (!psmi_ep_device_is_enabled(ep, PTL_DEVID_IPS)) {
uint64_t mylid = (uint16_t) psm_epid_nid(ep->epid);
if (mylid == epid_lid)
result = 1;
}
else {
err = psmi_ep_devlids(&lids, &num_lids, ep->gid_hi, ep->gid_lo);
if (err)
return err;
for (i = 0; i < num_lids; i++) {
if (epid_lid == lids[i]) {
result = 1;
break;
}
}
}
*result_o = result;
return PSM_OK;
}
PSMI_API_DECL(psm_ep_epid_share_memory)
#define PSMI_EP_OPEN_SHM_MBYTES_MIN 2
#define PSMI_EP_OPEN_PKEY_MASK 0x7fffULL
psm_error_t
__psm_ep_open_opts_get_defaults(struct psm_ep_open_opts *opts)
{
union psmi_envvar_val nSendBuf;
union psmi_envvar_val netPKey;
#if (PSM_VERNO >= 0x010d)
union psmi_envvar_val env_path_service_id;
union psmi_envvar_val env_path_res_type;
#endif
#if (PSM_VERNO >= 0x010e)
union psmi_envvar_val nSendDesc;
union psmi_envvar_val immSize;
#endif
PSMI_ERR_UNLESS_INITIALIZED(NULL);
/* Get number of default send buffers from environment */
psmi_getenv("PSM_NUM_SEND_BUFFERS",
"Number of send buffers to allocate [1024]",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_UINT,
(union psmi_envvar_val) 1024,
&nSendBuf);
/* Get network key from environment. MVAPICH and other vendor MPIs do not
* specify it on ep open and we may require it for vFabrics.
*/
psmi_getenv("PSM_PKEY",
"Infiniband PKey to use for endpoint",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_ULONG,
(union psmi_envvar_val) IPATH_DEFAULT_P_KEY,
&netPKey);
#if (PSM_VERNO >= 0x010d)
/* Get Service ID from environment */
psmi_getenv("PSM_IB_SERVICE_ID",
"IB Service ID for path resolution",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_ULONG_ULONG,
(union psmi_envvar_val) IPATH_DEFAULT_SERVICE_ID,
&env_path_service_id);
/* Get Path resolution type from environment Possible choices are:
*
* NONE : Default same as previous instances. Utilizes static data.
* OPP : Use OFED Plus Plus library to do path record queries.
* UMAD : Use raw libibumad interface to form and process path records.
* ANY : Try all available path record mechanisms.
*/
psmi_getenv("PSM_PATH_REC",
"Mechanism to query IB path record (default is no path query)",
PSMI_ENVVAR_LEVEL_USER, PSMI_ENVVAR_TYPE_STR,
(union psmi_envvar_val) "none", &env_path_res_type);
#endif
#if (PSM_VERNO >= 0x010e)
/* Get numner of send descriptors - by default this is 4 times the number
* of send buffers - mainly used for short/inlined messages.
*/
psmi_getenv("PSM_NUM_SEND_DESCRIPTORS",
"Number of send descriptors to allocate [4096]",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_UINT,
(union psmi_envvar_val) (nSendBuf.e_uint << 2),
&nSendDesc);
/* Get immediate data size - transfers less than immediate data size do
* not consume a send buffer and require just a send descriptor.
*/
psmi_getenv("PSM_SEND_IMMEDIATE_SIZE",
"Immediate data send size not requiring a buffer [128]",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_UINT,
(union psmi_envvar_val) 128,
&immSize);
#endif
opts->timeout = 30000000000LL; /* 30 sec */
opts->unit = IPATH_UNIT_ID_ANY;
opts->port = 0;
opts->outsl = PSMI_SL_DEFAULT;
#if (PSM_VERNO >= 0x0107) && (PSM_VERNO <= 0x010a)
opts->outvl = 0;
#endif
opts->affinity = PSM_EP_OPEN_AFFINITY_SET;
opts->shm_mbytes = 10;
opts->sendbufs_num = nSendBuf.e_uint;
opts->network_pkey = (uint64_t) netPKey.e_ulong;
#if (PSM_VERNO >= 0x010d)
opts->service_id = (uint64_t) env_path_service_id.e_ulonglong;
if (!strcasecmp(env_path_res_type.e_str, "none"))
opts->path_res_type = PSM_PATH_RES_NONE;
else if (!strcasecmp(env_path_res_type.e_str, "opp"))
opts->path_res_type = PSM_PATH_RES_OPP;
else if (!strcasecmp(env_path_res_type.e_str, "umad"))
opts->path_res_type = PSM_PATH_RES_UMAD;
else {
_IPATH_ERROR("Unknown path resolution type %s. Disabling use of path record query.\n", env_path_res_type.e_str);
opts->path_res_type = PSM_PATH_RES_NONE;
}
#endif
#if (PSM_VERNO >= 0x010e)
opts->senddesc_num = nSendDesc.e_uint;
opts->imm_size = immSize.e_uint;
#endif
return PSM_OK;
}
PSMI_API_DECL(psm_ep_open_opts_get_defaults)
psm_error_t psmi_poll_noop(ptl_t *ptl, int replyonly);
psm_error_t
__psm_ep_open_internal(psm_uuid_t const unique_job_key, int *devid_enabled,
struct psm_ep_open_opts const *opts_i, psm_mq_t mq,
psm_ep_t *epo, psm_epid_t *epido)
{
psm_ep_t ep = NULL;
uint32_t num_units;
size_t len;
psm_error_t err;
psm_epaddr_t epaddr = NULL;
char buf[128], *p, *e;
char *old_cpuaff = NULL, *old_unit = NULL;
union psmi_envvar_val yield_cnt, no_cpuaff, env_unit_id,
env_port_id, env_sl;
size_t ptl_sizes;
int default_cpuaff;
struct psm_ep_open_opts opts;
ptl_t *amsh_ptl, *ips_ptl, *self_ptl;
int i;
/* First get the set of default options, we overwrite with the user's
* desired values afterwards */
if ((err = psm_ep_open_opts_get_defaults(&opts)))
goto fail;
if (opts_i != NULL) {
if (opts_i->timeout != -1)
opts.timeout = opts_i->timeout;
if (opts_i->unit != -1)
opts.unit = opts_i->unit;
if (opts_i->affinity != -1)
opts.affinity = opts_i->affinity;
if (opts_i->shm_mbytes != -1)
opts.shm_mbytes = opts_i->shm_mbytes;
if (opts_i->sendbufs_num != -1)
opts.sendbufs_num = opts_i->sendbufs_num;
if (psmi_verno_client() >= PSMI_VERNO_MAKE(1,1)) {
if ((opts_i->network_pkey & PSMI_EP_OPEN_PKEY_MASK) !=
PSMI_EP_OPEN_PKEY_MASK)
opts.network_pkey = opts_i->network_pkey;
}
if (psmi_verno_client() >= PSMI_VERNO_MAKE(1,7)) {
/* these values are sanity checked below */
opts.port = opts_i->port;
opts.outsl = opts_i->outsl;
#if (PSM_VERNO >= 0x0107) && (PSM_VERNO <= 0x010a)
opts.outvl = opts_i->outvl;
#endif
}
#if (PSM_VERNO >= 0x010d)
/* Note: Environment variable specification for service ID and
* path resolition type takes precedence over ep_open defaults.
*/
if (psmi_verno_client() >= 0x010d) {
if (opts_i->service_id)
opts.service_id = (uint64_t) opts_i->service_id;
if (opts.path_res_type == PSM_PATH_RES_NONE)
opts.path_res_type = opts_i->path_res_type;
}
#endif
#if (PSM_VERNO >= 0x010e)
if (psmi_verno_client() >= 0x010e) {
if (opts_i->senddesc_num)
opts.senddesc_num = opts_i->senddesc_num;
if (opts_i->imm_size)
opts.imm_size = opts_i->imm_size;
}
#endif
}
if (psmi_device_is_enabled(devid_enabled, PTL_DEVID_IPS)) {
if ((err = psm_ep_num_devunits(&num_units)) != PSM_OK)
goto fail;
} else num_units = 0;
/* do some error checking */
if (opts.timeout < -1) {
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid timeout value %lld",
(long long) opts.timeout);
goto fail;
} else if (num_units && (opts.unit < -1 || opts.unit >= IPATH_MAX_UNIT)) {
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid Device Unit ID %d (%d units found)",
opts.unit, num_units);
goto fail;
} else if (opts.affinity < 0 || opts.affinity > PSM_EP_OPEN_AFFINITY_FORCE) {
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid Affinity option: %d", opts.affinity);
goto fail;
} else if (opts.shm_mbytes < PSMI_EP_OPEN_SHM_MBYTES_MIN) {
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid shm_mbytes option at %d mbytes (minimum is %d)",
opts.shm_mbytes, PSMI_EP_OPEN_SHM_MBYTES_MIN);
goto fail;
}
/* Advertise in verbose env the fact that we parse the no-affinity
* variable. */
default_cpuaff = psmi_getenv("IPATH_NO_CPUAFFINITY",
"Prevent PSM from setting affinity",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_YESNO,
PSMI_ENVVAR_VAL_NO,
&no_cpuaff);
if (no_cpuaff.e_uint ||
(default_cpuaff && opts.affinity == PSM_EP_OPEN_AFFINITY_SKIP))
{
old_cpuaff = getenv("IPATH_NO_CPUAFFINITY");
setenv("IPATH_NO_CPUAFFINITY", "1", 1);
}
#ifdef __MIC__
/*
* On MIC, we always pick unit from /sys/class/qib/ipath/unit,
* but only do this if there is a HCA unit.
*/
if (num_units > 0) {
char pathname[128];
struct stat st;
FILE *fp;
snprintf(pathname, sizeof(pathname),
"/sys/class/qib/ipath/unit");
fp = NULL;
if (stat(pathname, &st) || S_ISDIR(st.st_mode) ||
!(fp = fopen(pathname, "r")) || (fscanf(fp, "%d", &opts.unit) != 1)) {
err = psmi_handle_error(NULL, PSM_EP_DEVICE_FAILURE,
"Couldn't read from %s", pathname);
if (fp) fclose(fp);
goto fail;
}
fclose(fp);
psmi_assert(opts.unit != IPATH_UNIT_ID_ANY);
psmi_assert(opts.unit < IPATH_MAX_UNIT);
}
#else
/* If a specific unit is set in the environment, use that one. */
if (!psmi_getenv("IPATH_UNIT", "Device Unit number (-1 autodetects)",
PSMI_ENVVAR_LEVEL_USER, PSMI_ENVVAR_TYPE_LONG,
(union psmi_envvar_val) IPATH_UNIT_ID_ANY,
&env_unit_id)) {
opts.unit = env_unit_id.e_long;
/* set mock UNIT *just* for setaffinity */
if (opts.unit != IPATH_UNIT_ID_ANY) {
char buf[32];
snprintf(buf, sizeof buf - 1, "%d", (int) opts.unit);
buf[sizeof buf - 1] = '\0';
old_unit = getenv("IPATH_UNIT");
setenv("IPATH_UNIT", buf, 1);
}
else
unsetenv("IPATH_UNIT");
}
#endif
if (!psmi_getenv("IPATH_PORT", "IB Port number (<= 0 autodetects)",
PSMI_ENVVAR_LEVEL_USER, PSMI_ENVVAR_TYPE_LONG,
(union psmi_envvar_val)0,
&env_port_id)) {
opts.port = env_port_id.e_long;
}
if (!psmi_getenv("IPATH_SL", "IB outging ServiceLevel number (default 0)",
PSMI_ENVVAR_LEVEL_USER, PSMI_ENVVAR_TYPE_LONG,
(union psmi_envvar_val) PSMI_SL_DEFAULT,
&env_sl)) {
opts.outsl = env_sl.e_long;
}
#if (PSM_VERNO >= 0x0107) && (PSM_VERNO <= 0x010a)
{
union psmi_envvar_val env_vl;
if (!psmi_getenv("IPATH_VL", "IB outging VirtualLane (default 0)",
PSMI_ENVVAR_LEVEL_USER, PSMI_ENVVAR_TYPE_LONG,
(union psmi_envvar_val)0,
&env_vl)) {
opts.outvl = env_vl.e_long;
}
}
#endif
/* sanity check new capabilities, after both opts and env */
if (opts.port < 0 || opts.port > IPATH_MAX_PORT)
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid Port number: %lld",
(unsigned long long) opts.port);
if (opts.outsl < 0 || opts.outsl > 15)
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid SL number: %lld",
(unsigned long long) opts.outsl);
#if (PSM_VERNO >= 0x0107) && (PSM_VERNO <= 0x010a)
if (opts.outvl < 0 || opts.outvl > 7)
err = psmi_handle_error(NULL, PSM_PARAM_ERR,
"Invalid VL number: %lld",
(unsigned long long) opts.outvl);
#endif
ptl_sizes =
(psmi_device_is_enabled(devid_enabled, PTL_DEVID_SELF) ?
psmi_ptl_self.sizeof_ptl() : 0) +
(psmi_device_is_enabled(devid_enabled, PTL_DEVID_IPS) ?
psmi_ptl_ips.sizeof_ptl() : 0) +
(psmi_device_is_enabled(devid_enabled, PTL_DEVID_AMSH) ?
psmi_ptl_amsh.sizeof_ptl() : 0);
if (ptl_sizes == 0) return PSM_EP_NO_DEVICE;
ep = (psm_ep_t) psmi_calloc(PSMI_EP_NONE, UNDEFINED, 1,
sizeof(struct psm_ep) + ptl_sizes);
epaddr = (psm_epaddr_t) psmi_calloc(PSMI_EP_NONE, PER_PEER_ENDPOINT,
1, sizeof(struct psm_epaddr));
if (ep == NULL || epaddr == NULL) {
err = psmi_handle_error(NULL, PSM_NO_MEMORY,
"Couldn't allocate memory for %s structure",
ep == NULL ? "psm_ep" : "psm_epaddr");
goto fail;
}
/* Copy PTL enabled status */
for (i = 0; i < PTL_MAX_INIT; i++)
ep->devid_enabled[i] = devid_enabled[i];
/* Matched Queue initialization. We do this early because we have to
* make sure ep->mq exists and is valid before calling ips_do_work.
*/
ep->mq = mq;
/* Get ready for PTL initialization */
memcpy(&ep->key, (void *) unique_job_key, sizeof(psm_uuid_t));
ep->epaddr = epaddr;
ep->shm_mbytes = opts.shm_mbytes;
ep->memmode = mq->memmode;
ep->ipath_num_sendbufs = opts.sendbufs_num;
ep->network_pkey = (uint16_t) opts.network_pkey & PSMI_EP_OPEN_PKEY_MASK;
#if (PSM_VERNO >= 0x010d)
ep->service_id = opts.service_id;
ep->path_res_type = opts.path_res_type;
#else
/* Select sane defaults with older PSM header */
ep->service_id = 0x1000117500000000ULL; /* Default service ID */
ep->path_res_type = 0; /* No path resolution */
#endif
#if (PSM_VERNO >= 0x010e)
ep->ipath_num_descriptors = opts.senddesc_num;
ep->ipath_imm_size = opts.imm_size;
#else
/* Default is 4 times more descriptors than buffers */
ep->ipath_num_descriptors = ep->ipath_num_sendbufs << 2;
ep->ipath_imm_size = 128;
#endif
ep->errh = psmi_errhandler_global; /* by default use the global one */
ep->ptl_amsh.ep_poll = psmi_poll_noop;
ep->ptl_ips.ep_poll = psmi_poll_noop;
ep->connections = 0;
/* Active message fields, used by psmi_shm_attach() */
ep->psmi_kassist_fd = -1;
ep->psmi_kassist_mode = 0;
ep->amsh_shmbase = 0;
ep->amsh_blockbase = 0;
ep->amsh_dirpage = NULL;
ep->amsh_keyname = NULL;
ep->amsh_shmfd = -1;
ep->amsh_shmidx = -1;
ep->amsh_max_idx = -1;
/* See how many iterations we want to spin before yielding */
psmi_getenv("PSM_YIELD_SPIN_COUNT",
"Spin poll iterations before yield",
PSMI_ENVVAR_LEVEL_HIDDEN,
PSMI_ENVVAR_TYPE_UINT,
(union psmi_envvar_val) PSMI_BLOCKUNTIL_POLLS_BEFORE_YIELD,
&yield_cnt);
ep->yield_spin_cnt = yield_cnt.e_uint;
ptl_sizes = 0;
amsh_ptl = ips_ptl = self_ptl = NULL;
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_AMSH)) {
amsh_ptl = (ptl_t *) (ep->ptl_base_data + ptl_sizes);
ptl_sizes += psmi_ptl_amsh.sizeof_ptl();
}
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_IPS)) {
ips_ptl = (ptl_t *) (ep->ptl_base_data + ptl_sizes);
ptl_sizes += psmi_ptl_ips.sizeof_ptl();
}
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_SELF)) {
self_ptl = (ptl_t *) (ep->ptl_base_data + ptl_sizes);
ptl_sizes += psmi_ptl_self.sizeof_ptl();
}
if ((err = psmi_ep_open_device(ep, &opts, unique_job_key,
&(ep->context), &ep->epid)))
goto fail;
/* Restore old cpuaffinity and unit settings.
* TODO: PSM should really just implement its own affinity
* setting function */
if (old_cpuaff != NULL)
setenv("IPATH_NO_CPUAFFINITY", old_cpuaff, 1);
if (old_unit != NULL)
setenv("IPATH_UNIT", old_unit, 1);
psmi_assert_always(ep->epid != 0);
ep->epaddr->epid = ep->epid;
/* Set our new label as soon as we know what it is */
strncpy(buf, psmi_gethostname(), sizeof(buf) - 1);
buf[sizeof(buf) - 1] = '\0';
p = buf + strlen(buf);
/* If our rank is set, use it. If not, use context.subcontext notation */
if (((e = getenv("MPI_RANKID")) != NULL && *e) ||
((e = getenv("PSC_MPI_RANK")) != NULL && *e))
len = snprintf(p, sizeof buf - strlen(buf), ":%d.", atoi(e));
else
len = snprintf(p, sizeof buf - strlen(buf), ":%d.%d.",
(uint32_t) psm_epid_context(ep->epid),
(uint32_t) psmi_epid_subcontext(ep->epid));
*(p + len) = '\0';
ep->context_mylabel = psmi_strdup(ep, buf);
if (ep->context_mylabel == NULL) {
err = PSM_NO_MEMORY;
goto fail;
}
//ipath_set_mylabel(ep->context_mylabel);
if ((err = psmi_epid_set_hostname(psm_epid_nid(ep->epid), buf, 0)))
goto fail;
/*
* Active Message initialization
*/
if ((err = psmi_am_init_internal(ep)))
goto fail;
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_SELF)) {
if ((err = psmi_ptl_self.init(ep, self_ptl, &ep->ptl_self)))
goto fail;
}
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_IPS)) {
if ((err = psmi_ptl_ips.init(ep, ips_ptl, &ep->ptl_ips)))
goto fail;
}
/* If we're shm-only, this device is enabled above */
if (psmi_ep_device_is_enabled(ep, PTL_DEVID_AMSH)) {
if ((err = psmi_ptl_amsh.init(ep, amsh_ptl, &ep->ptl_amsh)))
goto fail;
}
else {
/* We may have pre-attached as part of getting our rank for enabling
* shared contexts. */
psmi_shm_detach(ep);
}
/*
* Keep only IPS since only IPS support multi-rail, other devices
* are only setup once. IPS device can come to this function again.
*/
for (i = 0; i < PTL_MAX_INIT; i++) {
if (devid_enabled[i] != PTL_DEVID_IPS) {
devid_enabled[i] = -1;
}
}
*epido = ep->epid;
*epo = ep;
return PSM_OK;
fail:
if (ep != NULL) {
if (ep->context.fd != -1) close(ep->context.fd);
psmi_free(ep);
}
if (epaddr != NULL)
psmi_free(epaddr);
return err;
}
psm_error_t
__psm_ep_open(psm_uuid_t const unique_job_key, struct psm_ep_open_opts const *opts_i,
psm_ep_t *epo, psm_epid_t *epido)
{
psm_error_t err;
psm_mq_t mq;
psm_epid_t epid;
psm_ep_t ep, tmp;
uint32_t units[IPATH_MAX_UNIT];
uint16_t ports[IPATH_MAX_UNIT];
int i, num_rails = 0;
char *uname = "IPATH_UNIT";
char *pname = "IPATH_PORT";
char uvalue[4], pvalue[4];
int devid_enabled[PTL_MAX_INIT];
union psmi_envvar_val devs;
PSMI_ERR_UNLESS_INITIALIZED(NULL);
PSMI_PLOCK();
/* Matched Queue initialization. We do this early because we have to
* make sure ep->mq exists and is valid before calling ips_do_work.
*/
err = psmi_mq_malloc(&mq);
if (err != PSM_OK) goto fail;
/* See which ptl devices we want to use for this ep to be opened */
psmi_getenv("PSM_DEVICES",
"Ordered list of PSM-level devices",
PSMI_ENVVAR_LEVEL_USER,
PSMI_ENVVAR_TYPE_STR,
(union psmi_envvar_val) PSMI_DEVICES_DEFAULT,