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CANN: Support eager execution mode under ACL graph compilation (#15712)

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* [CANN] Support eager execution mode under ACL graph compilation

Add support for running operators in eager mode while ACL graph
compilation is enabled. This allows bypassing graph execution
and directly submitting ops, which is useful for debugging and
reducing graph build overhead in certain scenarios.

Signed-off-by: noemotiovon <757486878@qq.com>

* fix typo

Signed-off-by: noemotiovon <757486878@qq.com>

* rename to acl_graph_mode

Signed-off-by: noemotiovon <757486878@qq.com>

---------

Signed-off-by: noemotiovon <757486878@qq.com>
This commit is contained in:
Chenguang Li
2025-09-02 14:07:48 +08:00
committed by GitHub
parent ef2af57ddf
commit 2f853687b3
3 changed files with 16 additions and 1 deletions
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9
ggml/src/ggml-cann/common.h
View File

@@ -395,6 +395,7 @@ struct ggml_backend_cann_context {
#ifdef USE_ACL_GRAPH
/// Cached CANN ACL graph used for executing the current ggml computation graph.
std::unique_ptr<ggml_cann_graph> cann_graph;
bool acl_graph_mode = true;
#endif
cann_task_queue task_queue;
bool async_mode;
@@ -404,7 +405,6 @@ struct ggml_backend_cann_context {
ggml_cann_tensor_cache rms_norm_one_tensor_cache;
ggml_cann_tensor_cache rms_norm_zero_tensor_cache;
aclrtStream streams[GGML_CANN_MAX_STREAMS] = {nullptr}; /**< Array of streams for the device. */
/**
@@ -419,6 +419,13 @@ struct ggml_backend_cann_context {
async_mode = parse_bool(get_env("GGML_CANN_ASYNC_MODE").value_or(""));
GGML_LOG_INFO("%s: device %d async operator submission is %s\n", __func__,
device, async_mode ? "ON" : "OFF");
#ifdef USE_ACL_GRAPH
acl_graph_mode = !(parse_bool(get_env("GGML_CANN_DISABLE_ACL_GRAPH").value_or("")));
GGML_LOG_INFO("%s: device %d execution mode is %s (%s)\n",
__func__, device,
acl_graph_mode ? "GRAPH" : "EAGER",
acl_graph_mode ? "acl graph enabled" : "acl graph disabled");
#endif
}
/**

4
ggml/src/ggml-cann/ggml-cann.cpp
View File

@@ -2252,6 +2252,10 @@ static enum ggml_status ggml_backend_cann_graph_compute(
bool use_cann_graph = true;
bool cann_graph_update_required = false;
if (!cann_ctx->acl_graph_mode) {
use_cann_graph = false;
}
if (use_cann_graph) {
if (cann_ctx->cann_graph == nullptr) {
cann_ctx->cann_graph.reset(new ggml_cann_graph());