That error suggests that there is an issue with connectivity between machines.
On each of your four nodes, try to ssh into the other three, using the
hostlist values. For example, if you set "X10_HOSTLIST=A,B,C,D", then from
A, try to ssh into B, C, and D, from B try A, C, D, etc. Be sure to
include the domain name if you are using it in your hostlist.
You should be able to ssh from any machine to any of the others without
getting a password prompt. I suspect that on at least one of them you will
get a message asking you to confirm the host identity.
- Ben
From: suy...@cse.iitm.ac.in
To: Mailing list for users of the X10 programming language
<x10-users@lists.sourceforge.net>,
Date: 04/14/2014 08:20 AM
Subject: Re: [X10-users] Regarding X10 NPLACES
Hello Mikio
Thank you for the reply but when I am running my kernel I am unable to
observe such behavior. Currently I am seeing most of the places ("java"
processes) on the starting node and very few places on node 2 and 3. I am
also finding following error: tcgetattr: Inappropriate ioctl for device.
Can you tell me what may be the reason
Regards
Suyash
From: "Mikio Takeuchi" <mikio.takeu...@gmail.com>
To: "Mailing list for users of the X10 programming language"
<x10-users@lists.sourceforge.net>
Sent: Monday, April 14, 2014 5:28:06 PM
Subject: Re: [X10-users] Regarding X10 NPLACES
Hi Suyash,
With respect to the current implementation of Managed X10 with the default
(socket-based) runtime, your assumption is correct.
If you set X10_HOSTLIST="A,B" and X10_NPLACES=4, host A hosts places 0 and
2 and host B hosts places 1 and 3.
-- Mikio
2014-04-14 20:03 GMT+09:00 <suy...@cse.iitm.ac.in>:
Hello All
I wish to run a program with X10_NPLACES set to 128. I have 4 nodes and
each node has 16 cores with two hardware threads per core enables. Thus
totaling to 128 Hardware threads. I set X10_HOSTLIST to 4 nodes and while
executing I find a large number of "java" processes. I believe each java
process refers to a place. Is that right? If that is so then shouldn't
there be equal of "java" processes on each node i.e. each node should
have exactly 32 java processes?
Thanx
Regards
Suyash
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