Changes between Version 57 and Version 58 of doc/app/radiation_parameters

Timestamp:

Feb 12, 2021 5:33:27 PM (4 years ago)

Author:

resler

Comment:

--

doc/app/radiation_parameters

@@ -164 +164 @@
 }}}
 {{{#!td
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+Parameter sets max number of items which will be sent in MPI_AlltoAll calls at once (0=infinite).
+
+Some implementations of MPI protocol or their underlying hardware have limits of size of sending/receiving buffers. If user experience problems in MPI_AlltoAll transfer, this switch can help limit the large transfer to a number of smaller exchanges. The default setting 0 means no limit and it will suit in most situations. The setting of this parameter to too small value can lead to performance degradation.
 }}}
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