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[SYCL][L0] Support for >4Gb device allocations. #3840

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Merged
bader merged 1 commit into from
Jun 1, 2021
Merged

[SYCL][L0] Support for >4Gb device allocations. #3840

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18 changes: 18 additions & 0 deletions sycl/plugins/level_zero/pi_level_zero.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5683,6 +5683,15 @@ static pi_result USMDeviceAllocImpl(void **ResultPtr, pi_context Context,
ze_device_mem_alloc_desc_t ZeDesc = {};
ZeDesc.flags = 0;
ZeDesc.ordinal = 0;

ze_relaxed_allocation_limits_exp_desc_t RelaxedDesc = {};
if (Size > Device->ZeDeviceProperties.maxMemAllocSize) {
// Tell Level-Zero to accept Size > maxMemAllocSize
RelaxedDesc.stype = ZE_STRUCTURE_TYPE_RELAXED_ALLOCATION_LIMITS_EXP_DESC;
RelaxedDesc.flags = ZE_RELAXED_ALLOCATION_LIMITS_EXP_FLAG_MAX_SIZE;
ZeDesc.pNext = &RelaxedDesc;
}

ZE_CALL(zeMemAllocDevice, (Context->ZeContext, &ZeDesc, Size, Alignment,
Device->ZeDevice, ResultPtr));

Expand Down Expand Up @@ -5710,6 +5719,15 @@ static pi_result USMSharedAllocImpl(void **ResultPtr, pi_context Context,
ze_device_mem_alloc_desc_t ZeDevDesc = {};
ZeDevDesc.flags = 0;
ZeDevDesc.ordinal = 0;

ze_relaxed_allocation_limits_exp_desc_t RelaxedDesc = {};
if (Size > Device->ZeDeviceProperties.maxMemAllocSize) {
// Tell Level-Zero to accept Size > maxMemAllocSize
RelaxedDesc.stype = ZE_STRUCTURE_TYPE_RELAXED_ALLOCATION_LIMITS_EXP_DESC;
RelaxedDesc.flags = ZE_RELAXED_ALLOCATION_LIMITS_EXP_FLAG_MAX_SIZE;
ZeDevDesc.pNext = &RelaxedDesc;
}

ZE_CALL(zeMemAllocShared, (Context->ZeContext, &ZeDevDesc, &ZeHostDesc, Size,
Alignment, Device->ZeDevice, ResultPtr));

Expand Down