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f20efc630f
In anticipation of refactoring the jaxlib GPU custom calls into FFI calls, this change moves the implementation of `BlasHandlePool`, `SolverHandlePool`, and `SpSolverHandlePool` into new target. PiperOrigin-RevId: 658497960
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/* Copyright 2024 The JAX Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "jaxlib/gpu/blas_handle_pool.h"
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#include "absl/status/statusor.h"
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#include "absl/synchronization/mutex.h"
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#include "jaxlib/gpu/gpu_kernel_helpers.h"
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#include "jaxlib/gpu/vendor.h"
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#include "jaxlib/handle_pool.h"
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namespace jax {
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template <>
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/*static*/ absl::StatusOr<BlasHandlePool::Handle> BlasHandlePool::Borrow(
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gpuStream_t stream) {
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BlasHandlePool* pool = Instance();
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absl::MutexLock lock(&pool->mu_);
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gpublasHandle_t handle;
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if (pool->handles_[stream].empty()) {
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JAX_RETURN_IF_ERROR(JAX_AS_STATUS(gpublasCreate(&handle)));
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} else {
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handle = pool->handles_[stream].back();
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pool->handles_[stream].pop_back();
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}
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if (stream) {
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JAX_RETURN_IF_ERROR(JAX_AS_STATUS(gpublasSetStream(handle, stream)));
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}
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return Handle(pool, handle, stream);
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}
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} // namespace jax
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