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[SymMem 2/5] SymmetricTensor runtime type #5517

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[SymMem 2/5] SymmetricTensor runtime type #5517

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ad9b201
runtime symmetric tensor
samnordmann Nov 13, 2025
ea2aba7
Merge branch 'sym/VMM_bits' into sym/symmetric_tensor
samnordmann Nov 17, 2025
ca8c70a
fix header
samnordmann Nov 17, 2025
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2 changes: 2 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -312,6 +312,7 @@ list(APPEND NVFUSER_SRCS
${NVFUSER_SRCS_DIR}/multidevice/execution_utils.cpp
${NVFUSER_SRCS_DIR}/multidevice/propagation.cpp
${NVFUSER_SRCS_DIR}/multidevice/utils.cpp
${NVFUSER_SRCS_DIR}/multidevice/symmetric_tensor.cpp
${NVFUSER_SRCS_DIR}/mutator.cpp
${NVFUSER_SRCS_DIR}/ops/alias.cpp
${NVFUSER_SRCS_DIR}/ops/arith.cpp
Expand Down Expand Up @@ -1184,6 +1185,7 @@ if(BUILD_TEST)
${NVFUSER_ROOT}/tests/cpp/test_multidevice_stream_parallel_type.cpp
${NVFUSER_ROOT}/tests/cpp/test_multidevice_transformer.cpp
${NVFUSER_ROOT}/tests/cpp/test_multidevice_ipc.cpp
${NVFUSER_ROOT}/tests/cpp/test_multidevice_symmetric_tensor.cpp
)
add_test_without_main(test_multidevice "${MULTIDEVICE_TEST_SRCS}" "")
list(APPEND TEST_BINARIES test_multidevice)
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17 changes: 1 addition & 16 deletions csrc/multidevice/ipc_handle.cpp
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Expand Up @@ -8,25 +8,10 @@
#include <cuda_utils.h>
#include <multidevice/communicator.h>
#include <multidevice/ipc_handle.h>
#include <multidevice/utils.h>

namespace nvfuser {

namespace {

template <typename T>
std::vector<uint8_t> toBytes(const T& data) {
return std::vector<uint8_t>(
reinterpret_cast<const uint8_t*>(&data),
reinterpret_cast<const uint8_t*>(&data) + sizeof(T));
}

template <typename T>
const T& fromBytes(const std::vector<uint8_t>& bytes) {
return *reinterpret_cast<const T*>(bytes.data());
}

} // namespace

IpcHandle::IpcHandle(at::Tensor tensor)
: ptr_(tensor.data_ptr()),
rank_(Communicator::getInstance().deviceId()),
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