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[CMake] Autodetect HSA_AMDGPU_GPU_TARGET #36

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merged 1 commit into from Apr 22, 2016
Merged

[CMake] Autodetect HSA_AMDGPU_GPU_TARGET #36

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5 changes: 3 additions & 2 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -274,11 +274,12 @@ if (HSA_USE_AMDGPU_BACKEND)
endif (NOT AMDPHDRS)
endif ()

set(HSA_AMDGPU_GPU_TARGET "kaveri" CACHE STRING "Target GPU device (kaveri,carrizo,fiji)")
set(HSA_AMDGPU_GPU_TARGET "auto" CACHE STRING "Target GPU device (kaveri,carrizo,fiji)")

if (NOT (HSA_AMDGPU_GPU_TARGET STREQUAL "kaveri" OR
HSA_AMDGPU_GPU_TARGET STREQUAL "carrizo" OR
HSA_AMDGPU_GPU_TARGET STREQUAL "fiji"))
HSA_AMDGPU_GPU_TARGET STREQUAL "fiji" OR
HSA_AMDGPU_GPU_TARGET STREQUAL "auto"))
MESSAGE(FATAL_ERROR "${HSA_AMDGPU_GPU_TARGET} is not a valid GPU")
endif()

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53 changes: 50 additions & 3 deletions lib/clamp-hsatools.in
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Expand Up @@ -71,13 +71,60 @@ if [ $KMDUMPLLVM == "1" ]; then
cp $1.linked.bc ./dump.linked.bc
fi

TOPOLOGY_SYSFS_DIR=/sys/devices/virtual/kfd/kfd/topology/nodes

# Prints GPU name for a given Device ID
# param - Device ID.
deviceIdToGpuName() {
local deviceId=$1; shift;
local platformName=""
case $deviceId in
1304 | 1305 | 1306 | 1307 | 1309 | 130a | 130b | 130c | 130d | 130e | 130f | \
1310 | 1311 | 1312 | 1313 | 1315 | 1316 | 1317 | 1318 | 131b | 131c | 131d )
platformName="kaveri" ;;
9874 | 9875 | 9876 | 9877 )
platformName="carrizo" ;;
7300 )
platformName="fiji" ;;
* )
echo "Warning: failed to autodetect target, defaulting to fiji"
platformName="fiji" ;;
esac
echo "$platformName"
}

# Prints GPU Name for the given Node ID
# param - Node Path
getNodeName() {
local nodePath=$1; shift;
local gpuIdInDec=$(cat $nodePath/properties | grep device_id | awk '{print $2}')
printf -v gpuIdInHex "%x" "$gpuIdInDec"
local gpuName=$(deviceIdToGpuName $gpuIdInHex)
echo "$gpuName"
}

# Prints the name of the first HSA node with a GPU associated with it
getDefaultHsaNodeName() {
for i in $(find $TOPOLOGY_SYSFS_DIR -maxdepth 1 -mindepth 1 -type d); do
local simdcount=$(cat $i/properties | grep simd_count | awk '{print $2}')
if [ $simdcount != 0 ]; then
echo "$(getNodeName $i)"
return
fi
done
}

HSA_AMDGPU_GPU_TARGET=@HSA_AMDGPU_GPU_TARGET@
if [ "$HSA_AMDGPU_GPU_TARGET" == "auto" ]; then
HSA_AMDGPU_GPU_TARGET="$(getDefaultHsaNodeName)"
fi

# Optimization notes:
# -disable-simplify-libcalls: prevents transforming loops into library calls such as memset, memcopy on GPU

if [ $KM_USE_AMDGPU ]; then
# KMOPTOPT can be used to pass last-minute options to opt in LC backend
$HLC_OPT $KMOPTOPT -O3 -mtriple amdgcn--amdhsa -mcpu=@HSA_AMDGPU_GPU_TARGET@ -disable-simplify-libcalls -verify $1.linked.bc -o $1.opt.bc
$HLC_OPT $KMOPTOPT -O3 -mtriple amdgcn--amdhsa -mcpu=$HSA_AMDGPU_GPU_TARGET -disable-simplify-libcalls -verify $1.linked.bc -o $1.opt.bc
else
$HLC_OPT -O3 -disable-simplify-libcalls -verify $1.linked.bc -o $1.opt.bc
fi
Expand All @@ -93,9 +140,9 @@ if [ $KMDUMPLLVM == "1" ]; then
fi

if [ $KM_USE_AMDGPU ]; then
$HLC_LLC -O2 -mtriple amdgcn--amdhsa -mcpu=@HSA_AMDGPU_GPU_TARGET@ -filetype=obj -o $1.hsail $1.opt.bc
$HLC_LLC -O2 -mtriple amdgcn--amdhsa -mcpu=$HSA_AMDGPU_GPU_TARGET -filetype=obj -o $1.hsail $1.opt.bc
if [ $KMDUMPISA == "1" ]; then
$HLC_LLC -O2 -mtriple amdgcn--amdhsa -mcpu=@HSA_AMDGPU_GPU_TARGET@ -filetype=asm -o $1.isa $1.opt.bc
$HLC_LLC -O2 -mtriple amdgcn--amdhsa -mcpu=$HSA_AMDGPU_GPU_TARGET -filetype=asm -o $1.isa $1.opt.bc
mv $1.isa ./dump.isa
fi
else
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