set free_when_no_cache_hit default value to true (#48815)

592ed40b · wanghuancoder · GitHub · cdf31dc1 · 592ed40b
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paddle/fluid/memory/allocation/auto_growth_best_fit_allocator.cc ...fluid/memory/allocation/auto_growth_best_fit_allocator.cc +1 -1

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--- a/paddle/fluid/memory/allocation/auto_growth_best_fit_allocator.cc
+++ b/paddle/fluid/memory/allocation/auto_growth_best_fit_allocator.cc
@@ -31,7 +31,7 @@ PADDLE_DEFINE_EXPORTED_READONLY_bool(
 PADDLE_DEFINE_EXPORTED_READONLY_bool(
    free_when_no_cache_hit,
-    false,
+    true,
    "Whether to free idle chunks when no cache hit. If true, idle "
    "chunk would be freed when no cache hit; if false, idle "
    "chunk would be freed when out of memory occurs. This flag "