AW: about command replicaRecv and replicaSend

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Mon Oct 19 2015 - 02:43:43 CDT

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ReplicaSend and ReplicaRecv can be used to transfer any variables between replicas.

ReplicaBarrier as one might assume, causes all replicas to stop at this point in the script, until all replicas reached it.

Norman Geist

Von: owner-namd-l_at_ks.uiuc.edu [mailto:owner-namd-l_at_ks.uiuc.edu] Im Auftrag von jc guo
Gesendet: Montag, 19. Oktober 2015 09:10
An: namd-l_at_ks.uiuc.edu
Betreff: namd-l: about command replicaRecv and replicaSend

Dear NAMD users,

Could anyone give me a short explanation of this three command: replicaBarrier, replicaSend data dest, replicaRecv source

In lib\replica\replica.namd, we have

set pot2 [replicaRecv $replica(loc.$swap)]

and

set doswap [expr $delta < 0. || exp(-1. * $delta) > rand()]

replicaSend $doswap $replica(loc.$swap)

replicaSend $POTENTIAL $replica(loc.$swap)

I was confused that what data relicaSend and replicaRecv will send/receive from replicaID（like why potential will receive? is it receive all data generate by another replica) ? and where we use replicaBarrier?

Thanks for any help.

JC

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