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Amended description of GEMM_MULTITHREAD_THRESHOLD 

to reflect #742 making it track floating point operations rather than matrix size
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Martin Kroeker 2018-06-15 09:20:17 +02:00 committed by GitHub
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Makefile.rule
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@ -164,9 +164,11 @@ NO_AFFINITY = 1
# CONSISTENT_FPCSR = 1
# If any gemm arguement m, n or k is less or equal this threshold, gemm will be execute
# with single thread. You can use this flag to avoid the overhead of multi-threading
# in small matrix sizes. The default value is 4, but values as high as 50 have been
# reported to be optimal for certain workloads (50 is the recommended value for Julia).
# with single thread. (Actually in recent versions this is a factor proportional to the
# number of floating point operations necessary for the given problem size, no longer
# an individual dimension). You can use this setting to avoid the overhead of multi-
# threading in small matrix sizes. The default value is 4, but values as high as 50 have
# been reported to be optimal for certain workloads (50 is the recommended value for Julia).
# GEMM_MULTITHREAD_THRESHOLD = 4
# If you need santy check by comparing reference BLAS. It'll be very