parallel error

[Vishal Sharma]

hi,
I installed the parallel package for stata mp and am trying to execute a command using parallel:reshape long


i first set the clusters and get the following result:

parallel setclusters 4
N Clusters: 4
Stata dir: C:\Program Files (x86)\Stata15/StataMP-64.exe



however , i keep getting the following error after entering the parallel reshape long command, or any other command as well:
-----------------------------------------------------------------------
Parallel Computing with Stata (by GVY)
Clusters : 4
pll_id : kiaua6hsh1
Running at : \\sts.ad.ualberta.ca\UofA\Home\SPH\vishal\My Documents
Randtype : datetime
Waiting for the clusters to finish...
cluster 0001 has finished with a connection error -601- (timeout) (see more)...
--Break--
r(1);
-------------------------------------------------------------------------------------

i am wondering if it's a stata dir issue but i couldnt change the directory.

any thoughts?

thanks
vishal

[Phil Bromiley]

With this kind of program specific problem, you may need to contact the author. I, and I suspect many of those active on Statalist, simply pay for Stata's own parallel (i.e., multiprocessor) capabilities.

[Bjarte Aagnes]

What do you get if you run:

which parallel

sysuse bplong.dta
sort patient
parallel initialize 2
parallel, by(patient): by patient: egen max_bp = max(bp)

Report code and result using the code tags, see FAQ 12.3 How to use CODE delimiters.

[Bjarte Aagnes]

I add a comment on Stata/MP vs the parallel package:

Stata/MP: One Stata session doing the same task using several processors/cores with shared memory on one computer (node). Stata/MP provides symmetric multiprocessing (SMP) using the Open/MP API.

parallel: Severall Stata sessions, running independent tasks on one or more computers (nodes).

One example of using -parallel- could be running the same estimation, e.g. mlogit, on 60 imputed datasets.

(The above is different from parallel computing on a computer cluster: running simultaneous computations of the same task
across networks of computers with "globally addressable" memory, using MPI or hybrid OpenMP/MPI.)

[wbuchanan]

Vishal Sharma
The key line is:

Running at : \\sts.ad.ualberta.ca\UofA\Home\SPH\vishal\My Documents

This indicates that the instance is not running locally but is running and/or writing data to a network location. The connection error could be one of a thousand different things. If you can run the command locally try that instead of trying to connect to multiple servers.

[Filipe Rodrigues]

Dear all

I am getting the same error as @Vishal and I am running the script below locally:

clear
cd "/Applications/Stata"
parallel setclusters 2, statapath(/Applications/Stata)
sysuse auto, clear
parallel bs, rep(1000): regress mpg weight gear foreign

This is the message I get:

. parallel bs, rep(1000): regress mpg weight gear foreign
--------------------------------------------------------------------------------
Parallel Computing with Stata (by GVY)
Clusters   : 2
pll_id     : 2jggphu610
Running at : /Applications/Stata
Randtype   : datetime
Waiting for the clusters to finish...
cluster 0001 has finished with a connection error -601- (timeout) (see more)...
cluster 0002 has finished with a connection error -601- (timeout) (see more)...
--Break--
r(1);

Does anyone have an idea why?

Thanks!