Merge 1ed99453dd into 36fdfa2694

Merge pull request #3646 from SChernykh/dev
Optimized autoconfig for AMD CPUs with < 2 MB L3 cache per thread
2025-12-07 16:05:05 -05:00 · 2025-03-26 12:54:32 +00:00 · 2025-03-22 18:36:09 +07:00 · 2025-03-22 11:34:23 +01:00 · 2024-08-20 19:08:57 -06:00
2 changed files with 8 additions and 3 deletions
--- a/src/backend/cpu/CpuBackend.cpp
+++ b/src/backend/cpu/CpuBackend.cpp
@@ -352,7 +352,7 @@ void xmrig::CpuBackend::setJob(const Job &job)
    const auto &cpu = d_ptr->controller->config()->cpu();

    auto threads = cpu.get(d_ptr->controller->miner(), job.algorithm());
-    if (!d_ptr->threads.empty() && d_ptr->threads.size() == threads.size() && std::equal(d_ptr->threads.begin(), d_ptr->threads.end(), threads.begin())) {
+    if (!d_ptr->threads.empty() && d_ptr->threads.size() == threads.size() && std::equal(d_ptr->threads.begin(), d_ptr->threads.end(), threads.begin()) && d_ptr->algo == job.algorithm()) {
        return;
    }

--- a/src/backend/cpu/platform/HwlocCpuInfo.cpp
+++ b/src/backend/cpu/platform/HwlocCpuInfo.cpp
@@ -320,8 +320,13 @@ void xmrig::HwlocCpuInfo::processTopLevelCache(hwloc_obj_t cache, const Algorith
            L2 += l2->attr->cache.size;
            L2_associativity = l2->attr->cache.associativity;

-            if (L3_exclusive && l2->attr->cache.size >= scratchpad) {
-                extra += scratchpad;
+            if (L3_exclusive) {
+                if (vendor() == VENDOR_AMD) {
+                    extra += std::min<size_t>(l2->attr->cache.size, scratchpad);
+                }
+                else if (l2->attr->cache.size >= scratchpad) {
+                    extra += scratchpad;
+                }
            }
        }
    }
Author	SHA1	Message	Date
Tony Butler	ca632fd38c	Merge `1ed99453dd` into `36fdfa2694`	2025-03-26 12:54:32 +00:00
xmrig	36fdfa2694	Merge pull request #3646 from SChernykh/dev Optimized autoconfig for AMD CPUs with < 2 MB L3 cache per thread	2025-03-22 18:36:09 +07:00
SChernykh	6cfc02d24f	Optimized autoconfig for AMD CPUs with < 2 MB L3 cache per thread	2025-03-22 11:34:23 +01:00
Tony Butler	1ed99453dd	CpuBackend/setJob: do not return early for same-threads if the algo is different Occasionally under some conditions autoswitching would not stop/start between algos which also didn't reset the running hashrate averages	2024-08-20 19:08:57 -06:00