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Fix sticky stateful config #78

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Merged
wine99 merged 1 commit into from
Mar 23, 2026
Merged

Fix sticky stateful config #78

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9 changes: 7 additions & 2 deletions ggml/src/ggml-openvino/ggml-openvino.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -143,13 +143,18 @@ static void * ggml_backend_openvino_buffer_get_base(ggml_backend_buffer_t buffer
return ctx->data;
}

static bool is_stateful_enabled() {
static const auto * stateful = getenv("GGML_OPENVINO_STATEFUL_EXECUTION");
return stateful && strcmp(stateful, "1") == 0;
}

static enum ggml_status ggml_backend_openvino_buffer_init_tensor(ggml_backend_buffer_t buffer, ggml_tensor * tensor) {
// GGML_LOG_DEBUG("%s: buffer usage=%d, tensor name=%s\n", __func__, buffer->usage, tensor->name);
ggml_backend_openvino_buffer_context * ctx = (ggml_backend_openvino_buffer_context *) buffer->context;

// Put kvcache on device memory for GPU (NPU memory is too small even for kvcache)
if (strncmp(tensor->name, "cache_", 6) == 0 && !ctx->is_remote && ggml_openvino_get_device_name() == "GPU" &&
!getenv("GGML_OPENVINO_STATEFUL_EXECUTION")) {
!is_stateful_enabled()) {
GGML_ASSERT(ctx->tensor_extras.empty());
auto device = ctx->device;
auto size = ctx->size;
Expand Down Expand Up @@ -664,7 +669,7 @@ GGML_BACKEND_API ggml_backend_t ggml_backend_openvino_init(int device) {

std::shared_ptr<ov_runtime_context> r_ctx = std::static_pointer_cast<ov_runtime_context>(ctx->runtime_context);
r_ctx->device = ggml_openvino_get_device_name();
r_ctx->stateful = getenv("GGML_OPENVINO_STATEFUL_EXECUTION") && !ggml_openvino_is_npu();
r_ctx->stateful = is_stateful_enabled() && !ggml_openvino_is_npu();

ggml_backend_t openvino_backend = new ggml_backend{
/* .guid = */ ggml_backend_openvino_guid(),
Expand Down
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