Running hpl on Rocks 6.1 error : Cannot chdir to home directory?

abhishekgit · 08-08-2014, 07:56 AM

Hey everyone,
I am trying to run hpl on rocks 6.1 I followed downloading and configuration of linpack using this
http://frankinformation.wordpress.co...rocks-cluster/

And i also referred the official rocks documentation

http://www.rocksclusters.org/rocks-d...g-linpack.html

xhpl is correctly made using make. I used sample HPL.dat for two processors and running this command

Code:

/opt/openmpi/bin/mpirun -np 2 -machinefile machines /export/home/linpacker/hpl/bin/Linux_PII_FBLAS/xhpl

This is the error

Code:

could not chdir to home directory : /export/home/linpacker : No such file or directory

Mpirun was unable to launch specific application as it failed to change the directory

ls -ld for /export/home/linpacker gives me
-drwx------

I am unable to figure out. Kindly help. Sorry in advance if any information is missing

TB0ne · 08-08-2014, 09:34 AM

Quote:

Originally Posted by abhishekgit

Hey everyone,
I am trying to run hpl on rocks 6.1 I followed downloading and configuration of linpack using this
http://frankinformation.wordpress.co...rocks-cluster/

And i also referred the official rocks documentation

http://www.rocksclusters.org/rocks-d...g-linpack.html

xhpl is correctly made using make. I used sample HPL.dat for two processors and running this command

Code:

/opt/openmpi/bin/mpirun -np 2 -machinefile machines /export/home/linpacker/hpl/bin/Linux_PII_FBLAS/xhpl

This is the error

Code:

could not chdir to home directory : /export/home/linpacker : No such file or directory
Mpirun was unable to launch specific application as it failed to change the directory

ls -ld for /export/home/linpacker gives me
-drwx------

I am unable to figure out. Kindly help. Sorry in advance if any information is missing

You posted that the directory in question is only readable to the owner, but don't post who the owner is. Unless you're logged in as the owner of that directory or root, you won't be able to do ANYTHING with it. Why are the permissions like that? Who owns the directory? Have you tried the very obvious, and give other users/groups permissions (say, "chmod 755"???)

abhishekgit · 08-08-2014, 02:01 PM

@TBOne,
Oh sorry. I am running as "linpacker" user. And the error says "No such file or directory" instead of "permission denied" or something

TB0ne · 08-08-2014, 03:42 PM

Quote:

Originally Posted by abhishekgit

@TBOne,
Oh sorry. I am running as "linpacker" user. And the error says "No such file or directory" instead of "permission denied" or something

Ok...so again, a very obvious thing to do would be to check to see if that file/directory exists. DOES IT? If not, CREATE IT.

abhishekgit · 08-11-2014, 01:16 AM

@TB0ne,
Yes.. Home directory didn't exist on the compute nodes, I SShed onto the compute nodes and created the directories. That error is replaced with another error now. Will work on it and come back later. thanks!

TB0ne · 08-11-2014, 07:22 AM

Quote:

Originally Posted by abhishekgit

@TB0ne,
Yes.. Home directory didn't exist on the compute nodes, I SShed onto the compute nodes and created the directories. That error is replaced with another error now. Will work on it and come back later. thanks!

Always a good idea to read and UNDERSTAND the error you get, before posting a question.