add doc in env_var.md

apache · May 7, 2019 · c19e247 · c19e247
1 parent d5e9cfd
commit c19e247
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/docs/faq/env_var.md b/docs/faq/env_var.md
@@ -280,6 +280,11 @@ When USE_PROFILER is enabled in Makefile or CMake, the following environments ca
   - Values: Int ```(default=4)```
   - This variable controls how many CuDNN dropout state resources to create for each GPU context for use in operator.
 
+* MXNET_ENFORCE_SAFE_ACCUMULATION
+  - Values: Values: 0(false) or 1(true) ```(default=0)```
+  - If this variable is set, the accumulation will enter the safe mode, meaning accumulation is done in a data type of higher precision than
+    the input data type, leading to more accurate results with a possible performance loss and backward compatibility loss.
+
 Settings for Minimum Memory Usage
 ---------------------------------
 - Make sure ```min(MXNET_EXEC_NUM_TEMP, MXNET_GPU_WORKER_NTHREADS) = 1```