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Arm backend: Remove fast scratch part for now #10958

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Merged
merged 2 commits into from
May 19, 2025
Merged

Arm backend: Remove fast scratch part for now #10958

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7482161
Remove fast scratch part for now
kirklandsign May 17, 2025
116eaf2
Fix
kirklandsign May 17, 2025
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13 changes: 4 additions & 9 deletions backends/arm/runtime/EthosUBackend.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -189,8 +189,6 @@ class EthosUBackend final : public ::executorch::runtime::BackendInterface {
// the end of the execution of the Ethos-U custom delegate
char* ethosu_scratch =
static_cast<char*>(temp_allocator->allocate(handles.scratch_data_size));
extern size_t ethosu_fast_scratch_size;
extern unsigned char* ethosu_fast_scratch;
ET_LOG(
Debug,
"EthosUBackend::execute: Running program data:\n cmd %p %zu\n weight %p %zu\n scratch %p %zu\n fast scratch %p %zu\n",
Expand All @@ -200,8 +198,8 @@ class EthosUBackend final : public ::executorch::runtime::BackendInterface {
handles.weight_data_size,
ethosu_scratch,
handles.scratch_data_size,
ethosu_fast_scratch,
ethosu_fast_scratch_size);
nullptr,
0);

// Write argument values (from EValue tensor) into Ethos-U scratch
// TODO(MLETORCH-123): Optimise into direct write from Vela into the SRAM
Expand Down Expand Up @@ -311,12 +309,9 @@ class EthosUBackend final : public ::executorch::runtime::BackendInterface {
static_cast<uint64_t>(
reinterpret_cast<uintptr_t>((handles.weight_data))),
static_cast<uint64_t>(reinterpret_cast<uintptr_t>(ethosu_scratch)),
static_cast<uint64_t>(
reinterpret_cast<uintptr_t>(ethosu_fast_scratch))};
0};
size_t bases_size[ETHOSU_NUM_BASE_ADDRS] = {
handles.weight_data_size,
handles.scratch_data_size,
ethosu_fast_scratch_size};
handles.weight_data_size, handles.scratch_data_size, 0};
int result = 0;
EXECUTORCH_PROF_START(
event_tracer, event_tracer_local_scope, "+EthosUBackend::execute()NPU");
Expand Down
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