commit 67c3c631240a67105d9e30c6fd9dc413d075f095
author Pablo Marquez Tello <pablo.tello@arm.com> Mon Jan 23 17:00:41 2023 +0000
committer Pablo Marquez Tello <pablo.tello@arm.com> Thu Jan 26 17:20:18 2023 +0000
tree 6202381386b6e536e511729f1ec7571886a97ce6
parent 002e6530f6218b00a28aef9be8b21efb08cf3602

Fix num_threads_hint() on macos.

* Query the number of big cores rather than the total number of cores on the system

* Resolves MLCE-994

Change-Id: I88cb6a4fd2ece9a035edd4cc5c0f5cf4aef93468
Signed-off-by: Pablo Marquez Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9006
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>

src/common/cpuinfo/CpuInfo.cpp

diff --git a/src/common/cpuinfo/CpuInfo.cpp b/src/common/cpuinfo/CpuInfo.cpp
index f76c0cc..1dd8ab5 100644
--- a/src/common/cpuinfo/CpuInfo.cpp
+++ b/src/common/cpuinfo/CpuInfo.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022 Arm Limited.
+ * Copyright (c) 2021-2023 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -352,7 +352,7 @@
     CpuInfo               info(isa, cpus_model);
     return info;
 #elif defined(__aarch64__) && defined(__APPLE__) /* #elif(BARE_METAL) && defined(__aarch64__) */
-    int                   ncpus = get_hw_capability("hw.logicalcpu");
+    int                   ncpus = get_hw_capability("hw.perflevel0.logicalcpu");
     CpuIsaInfo            isainfo;
     std::vector<CpuModel> cpus_model(ncpus);
     isainfo.neon = get_hw_capability("hw.optional.neon");