[Radiance-general] "Broken pipe" message on multi-core systems

[Randolph M. Fritz]

On 2011-07-07 16:54:06 -0700, Greg Ward said:

> Hi Randolph,
> 
> This shouldn't happen, unless one of the rpict processes died 
> unexpectedly.  Even then, I would expect some other kind of error to be 
> reported as well.
> 
> -Greg

Thanks, Greg.  I think that's what happenned; in fact seven of the 
eight died in two cases.  Wierdly, the third succeeded.  If I run it as 
a single-processor job, it works.  Here's a piece of the log:

>         rpiece -F bl_blinds_rpsync.txt -PP pfLF5M90 -vtv -vp 60.0 -2.0 66.0 -vd
> 12.0 0.0 0.0 -vu 0 0 1 -vh 60 -x 1024 -y 1024 -dp 512 -ar 42 -ms 3.6 
> -ds .3 -dt .1 -dc .5 -dr 1 -ss 1 -st .1 -af bl.amb -aa .1 -ad 1536 -as 
> 392 -av 10 10 10 -lr 8 -lw 1e-4 -ps 6 -pt .08 -o bl_blinds.unf bl.oct

> rpict: warning - no output produced

> rpict: system - write error in io_process: Broken pipe
> rpict: 0 rays, 0.00% after 0.000u 0.000s 0.001r hours on n0065.lr1
> rad: error rendering view blinds

-- 
Randolph M. Fritz • RFritz at lbl.gov
Environmental Energy Technologies Division • Lawrence Berkeley Labs