[Radiance-general] rcontrib malloc error

[Guglielmetti, Robert]

Thanks for the update; I figured it was something like that since I saw
this commit right around the time of this thread:

https://github.com/NREL/Radiance/commit/fa040e926fb1ed7147aa4fdb20be08a68b5
63250


=)



On 3/23/16, 6:48 AM, "Galen Burrell" <Galen.Burrell at arup.com> wrote:

>Just an update on this error: After searching through my materials
>definitions per Greg's suggestion, I found that I had a glass definition
>of 95% light transmission, which resulted in a transmissivity of > 1.
>Doh!  After reducing the light transmission to something more sensible I
>stopped getting the error.  Thanks Greg!
>
>Date: Thu, 17 Mar 2016 14:49:01 -0700
>From: Greg Ward <gregoryjward at gmail.com>
>To: Radiance general discussion <radiance-general at radiance-online.org>
>Subject: Re: [Radiance-general] rcontrib malloc error
>Message-ID: <4671033C-42AD-4540-94BD-C2554731B67F at lmi.net>
>Content-Type: text/plain; charset="windows-1252"
>
>Hi Galen,
>
>I've never seen rcontrib run out of memory in this way before.  What are
>your rendering options for rcontrib?  Do any of your surfaces have
>greater than 100% reflectance or transmittance?  This could cause the
>number of rays to increase rather than decrease on multiple bounces,
>which could lead to exponential memory growth during ray tree evaluation.
>
>-Greg
>
>> From: Galen Burrell <Galen.Burrell at arup.com>
>> Subject: [Radiance-general] rcontrib malloc error
>> Date: March 17, 2016 1:39:45 PM PDT
>> 
>> I?m running view matrix calculations using rfluxmtx/rcontrib for the
>>3-phase method and keep getting one of two errors:
>>  
>> 1)
>> rcontrib(2346) malloc: *** mmap(size=a really big number) failed
>> (error code=12)
>> *** error: can?t allocate region
>> *** set a breakpoint in malloc_error_break to debug
>> rcontrib: system ? out of memory in samp_hemi: Cannot allocate memory
>> rcontrib: system ? read error from render process
>> Killed: 9
>>  
>> 2)
>> rcontrib: system ? read error from render process
>> Killed: 9
>>  
>> I can?t establish a pattern for why/when these two errors occur.
>>  
>> Oddly, I don?t always get the error with some gridpoint files (with
>>5900 points), but I consistently get it with another gridpoint file
>>(with 7500 points).  I don?t understand why grid size would influence
>>memory though??
>>  
>> System is Mac OS 10.7.5 (2 x 6-core); error repeats on my laptop with
>> Yosemite installed Latest Radiance HEAD release; although the error
>> repeats on older versions from 6 months ago rcontrib settings are: ?n
>> 12 ?ab 12 ?ad 100000 ?lw 1e-5 ?I+
>>  
>> Any clues on why I?m getting these errors?
>>  
>> Thank you!
>>  
>> Galen
>
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