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[L0] Enable L0 Driver Init to init all device types with filtering #1931

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Merged
omarahmed1111 merged 1 commit into from
Aug 16, 2024
Merged

[L0] Enable L0 Driver Init to init all device types with filtering #1931

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38 changes: 31 additions & 7 deletions source/adapters/level_zero/adapter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -43,15 +43,31 @@ ur_result_t initPlatforms(PlatformVec &platforms) noexcept try {
}

std::vector<ze_driver_handle_t> ZeDrivers;
std::vector<ze_device_handle_t> ZeDevices;
ZeDrivers.resize(ZeDriverCount);

ZE2UR_CALL(zeDriverGet, (&ZeDriverCount, ZeDrivers.data()));
for (uint32_t I = 0; I < ZeDriverCount; ++I) {
auto platform = std::make_unique<ur_platform_handle_t_>(ZeDrivers[I]);
UR_CALL(platform->initialize());

// Save a copy in the cache for future uses.
platforms.push_back(std::move(platform));
ze_device_properties_t device_properties{};
device_properties.stype = ZE_STRUCTURE_TYPE_DEVICE_PROPERTIES;
uint32_t ZeDeviceCount = 0;
ZE2UR_CALL(zeDeviceGet, (ZeDrivers[I], &ZeDeviceCount, nullptr));
ZeDevices.resize(ZeDeviceCount);
ZE2UR_CALL(zeDeviceGet, (ZeDrivers[I], &ZeDeviceCount, ZeDevices.data()));
// Check if this driver has GPU Devices
for (uint32_t D = 0; D < ZeDeviceCount; ++D) {
ZE2UR_CALL(zeDeviceGetProperties, (ZeDevices[D], &device_properties));

if (ZE_DEVICE_TYPE_GPU == device_properties.type) {
// If this Driver is a GPU, save it as a usable platform.
auto platform = std::make_unique<ur_platform_handle_t_>(ZeDrivers[I]);
UR_CALL(platform->initialize());

// Save a copy in the cache for future uses.
platforms.push_back(std::move(platform));
break;
}
}
}
return UR_RESULT_SUCCESS;
} catch (...) {
Expand Down Expand Up @@ -105,8 +121,16 @@ ur_adapter_handle_t_::ur_adapter_handle_t_()
// We must only initialize the driver once, even if urPlatformGet() is
// called multiple times. Declaring the return value as "static" ensures
// it's only called once.
GlobalAdapter->ZeResult =
ZE_CALL_NOCHECK(zeInit, (ZE_INIT_FLAG_GPU_ONLY));

// Init with all flags set to enable for all driver types to be init in
// the application.
ze_init_flags_t L0InitFlags = ZE_INIT_FLAG_GPU_ONLY;
if (UrL0InitAllDrivers) {
L0InitFlags |= ZE_INIT_FLAG_VPU_ONLY;
}
logger::debug("\nzeInit with flags value of {}\n",
static_cast<int>(L0InitFlags));
GlobalAdapter->ZeResult = ZE_CALL_NOCHECK(zeInit, (L0InitFlags));
}
assert(GlobalAdapter->ZeResult !=
std::nullopt); // verify that level-zero is initialized
Expand Down
9 changes: 9 additions & 0 deletions source/adapters/level_zero/common.hpp
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Expand Up @@ -207,6 +207,15 @@ const int UrL0LeaksDebug = [] {
return std::atoi(UrRet);
}();

// Enable for UR L0 Adapter to Init all L0 Drivers on the system with filtering
// in place for only currently used Drivers.
const int UrL0InitAllDrivers = [] {
const char *UrRet = std::getenv("UR_L0_INIT_ALL_DRIVERS");
if (!UrRet)
return 0;
return std::atoi(UrRet);
}();

// Controls Level Zero calls serialization to w/a Level Zero driver being not MT
// ready. Recognized values (can be used as a bit mask):
enum {
Expand Down