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ggml-backend : only offload from host buffers (fix) (#11124)

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Diego Devesa 2025-01-07 16:11:57 +01:00 committed by GitHub
parent a3d50bc022
commit 017cc5f446
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2 changed files with 4 additions and 2 deletions
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4
ggml/src/ggml-backend.cpp
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@ -761,10 +761,10 @@ static int ggml_backend_sched_backend_id_from_cur(ggml_backend_sched_t sched, st
} }
// skip ROPE since the rope freqs tensor is too small to choose a backend based on it // skip ROPE since the rope freqs tensor is too small to choose a backend based on it
// not an ideal solution // not an ideal solution
if (tensor->op != GGML_OP_ROPE && src->buffer != NULL && src->buffer->usage == GGML_BACKEND_BUFFER_USAGE_WEIGHTS && ggml_backend_buffer_is_host(src->buffer)) { if (tensor->op != GGML_OP_ROPE && src->buffer != NULL && src->buffer->usage == GGML_BACKEND_BUFFER_USAGE_WEIGHTS) {
int src_backend_id = ggml_backend_sched_backend_from_buffer(sched, src, tensor); int src_backend_id = ggml_backend_sched_backend_from_buffer(sched, src, tensor);
// check if a backend with higher prio wants to offload the op // check if a backend with higher prio wants to offload the op
if (src_backend_id == sched->n_backends - 1) { if (src_backend_id == sched->n_backends - 1 && ggml_backend_buffer_is_host(src->buffer)) {
for (int b = 0; b < src_backend_id; b++) { for (int b = 0; b < src_backend_id; b++) {
if (ggml_backend_supports_op(sched->backends[b], tensor) && ggml_backend_offload_op(sched->backends[b], tensor)) { if (ggml_backend_supports_op(sched->backends[b], tensor) && ggml_backend_offload_op(sched->backends[b], tensor)) {
SET_CAUSE(tensor, "1.off"); SET_CAUSE(tensor, "1.off");

2
ggml/src/ggml-cpu/ggml-cpu-aarch64.cpp
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@ -4169,6 +4169,8 @@ static ggml_backend_buffer_t ggml_backend_cpu_aarch64_buffer_type_alloc_buffer(g
buffer->buft = buft; buffer->buft = buft;
buffer->iface.init_tensor = ggml_backend_cpu_aarch64_buffer_init_tensor; buffer->iface.init_tensor = ggml_backend_cpu_aarch64_buffer_init_tensor;
buffer->iface.set_tensor = ggml_backend_cpu_aarch64_buffer_set_tensor; buffer->iface.set_tensor = ggml_backend_cpu_aarch64_buffer_set_tensor;
buffer->iface.get_tensor = nullptr;
buffer->iface.cpy_tensor = nullptr;
return buffer; return buffer;
} }