[SYCL] Support sycl::kernel_bundle for multi-device scenario #15546
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This PR includes:
* Changes in the program manager methods to be able to properly
create/build UR program for multiple devices. So far, we were mostly
using only the first device in the vector to create/build UR program
which made UR program unusable on other devices.
* UR tag update brings the version of urProgramCreateWithBinary which allows
to create UR program from multiple device binaries.
* Our program cache key allowed only a single device. I have changed it
to contain a set of devices. If UR program is created and built for a
set of devices then the same UR program is usable whenver we have any
subset of this set. That's why if we have a program built for a set of
devices then add all subsets to the cache. Before we were adding a
record to the cache for each device from the set which is incorrect.
For example, if someone requests a UR program for {dev2, dev3} from
the cache then it is expected that this UR progam must be usable to
submit a kernel to dev3. But we could get a program for
{dev1, dev2} from the cache which is unusable on dev3.
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cperkinsintel
approved these changes
Oct 16, 2024
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This PR includes:
Changes in the program manager methods to be able to properly create/build UR program for multiple devices. So far, we were mostly using only the first device in the vector to create/build UR program which made UR program unusable on other devices.
UR tag update brings the version of urProgramCreateWithBinary which allows
to create UR program from multiple device binaries.
Our program cache key allowed only a single device. I have changed it to contain a set of devices. If UR program is created and built for a set of devices then the same UR program is usable whenver we have any subset of this set. That's why if we have a program built for a set of devices then add all subsets to the cache. Before we were adding a record to the cache for each device from the set which is incorrect. For example, if someone requests a UR program for {dev2, dev3} from the cache then it is expected that this UR progam must be usable to submit a kernel to dev3. But we could get a program for {dev1, dev2} from the cache which is unusable on dev3.