TaoLv commented on a change in pull request #12746: Add env flag to disable
MKLDNN cache (MXNET_MKLDNN_CACHE_ENABLED)
URL: https://github.com/apache/incubator-mxnet/pull/12746#discussion_r225756026
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File path: src/operator/nn/mkldnn/mkldnn_base-inl.h
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@@ -147,6 +148,61 @@ static inline bool MKLDNNEnvSet() {
return is_mkldnn_enabled;
}
+static inline int GetMKLDNNCacheSize() {
+ static int mkldnn_cache_size = dmlc::GetEnv("MXNET_MKLDNN_CACHE_SIZE", -1);
+ return mkldnn_cache_size;
+}
+
+// TODO(alex): (MXNET-1075) Will remove env variable and calculate cache size
during runtime
+//template<typename S, typename I, typename H>
+//static typename std::unordered_map<S, I, H>::iterator AddToCache(
+// const std::unordered_map<S, I, H> &cache, const S &key, const I &item) {
+// int mkldnn_cache_size = GetMKLDNNCacheSize();
+// if (mkldnn_cache_size != -1 && static_cast<int>(cache.size()) >
mkldnn_cache_size)
+// cache.erase(cache.begin());
+// auto ins_return = cache.insert(std::pair<S, I>(key, item));
+// CHECK(ins_return.second);
+// return ins_return.first;
+//}
+
+template<typename K, typename V, typename H>
+class MKLDNNCache {
Review comment:
Hi Alex, would you mind measuring the performance change of a deep model
like ResNet-152 after `MKLDNNCache` is added? Thanks.
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