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[tmodes <1362170@xxxxxxxxxxxxxxxxxx>]

I can't see anything strange in the output. It seems the image is
remapped on the GPU, but crashing when saving the image to disc.

Could you post your pto file (with images)? So I could try if I can
reproduce the crash.

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https://bugs.launchpad.net/bugs/1362170

Title:
  nona GPU for remapping : seg fault

Status in Hugin - Panorama Tools GUI:
  New

Bug description:
  If i activate the  GPU for remapping, it's always crash :

  
  ===========================================================================
  ***************  Panorama makefile generated by Hugin       ***************
  ===========================================================================
  System information
  ===========================================================================
  Operating system: GNU/Linux
  Release: 3.14.14-gentoo
  Kernel version: #1 SMP Thu Aug 14 21:23:51 CEST 2014
  Machine: x86_64
  Disc usage
  Sys. de fichiers Taille Utilisé Dispo Uti% Monté sur
  /dev/sda2           23G     19G  3,1G  86% /
  devtmpfs           3,9G       0  3,9G   0% /dev
  tmpfs              3,9G    320K  3,9G   1% /dev/shm
  tmpfs              3,9G    1,1M  3,9G   1% /run
  tmpfs              3,9G       0  3,9G   0% /sys/fs/cgroup
  tmpfs              3,9G    2,1M  3,9G   1% /tmp
  /dev/sda3          212G    173G   28G  87% /home
  /dev/sdb2          816G    677G   98G  88% /Backup
  /dev/sdc2          241G    136G   93G  60% /home/roumano/Musique
  /dev/sdc3          1,3T    1,2T   17G  99% /home/roumano/Vidéos
  tmpfs              796M     52K  796M   1% /run/user/500
  Memory usage
               total       used       free     shared    buffers     cached
  Mem:          7956       5647       2308         28        117        820
  -/+ buffers/cache:       4710       3245
  Swap:         3906       1775       2130
  ===========================================================================
  Output options
  ===========================================================================
  Hugin Version: 2014.0.0.51ff237f209e
  Project file: /tmp/huginpto_L9TZUg
  Output prefix: test
  Projection: Cylindrical (1)
  Field of view: 124 x 57
  Canvas dimensions: 6491 x 3246
  Crop area: (235,872) - (6306,3122)
  Output exposure value: 13.82
  Output stacks minimum overlap: 0.700
  Output layers maximum Ev difference: 0.50
  Selected outputs
  Normal panorama
  * Blended panorama
  Using GPU for remapping
  ===========================================================================
  Input images
  ===========================================================================
  Number of images in project file: 3
  Number of active images: 3
  Image 0: /home/roumano/raw/pano/2014-08-06--17.48.49.CR2.tif
  Image 0: Size 5196x3462, Exposure: 13.95
  Image 1: /home/roumano/raw/pano/2014-08-06--17.48.51.CR2.tif
  Image 1: Size 5196x3462, Exposure: 13.80
  Image 2: /home/roumano/raw/pano/2014-08-06--17.48.53.CR2.tif
  Image 2: Size 5196x3462, Exposure: 13.72
  ===========================================================================
  Testing programs
  ===========================================================================
  Checking nona...[OK]
  Checking enblend...[OK]
  Checking enfuse...[OK]
  Checking hugin_hdrmerge...[OK]
  Checking exiftool...[OK]
  ===========================================================================
  Stitching panorama
  ===========================================================================
  nona -g  -z LZW -r ldr -m TIFF_m -o test -i 0 /tmp/huginpto_L9TZUg
  nona: using graphics card: ATI Technologies Inc. AMD Radeon HD 7900 Series  
  make: *** [test0000.tif] Erreur de segmentation
  make: *** Suppression du fichier « test0000.tif »

  
  My card it's a ATI 7950 ( lspci : AMD/ATI] Tahiti PRO [Radeon HD 7950/8950 OEM / R9 280] )
  Driver used : ati-drivers-14.6_beta1
  on another exemple, OpenCL on my computer is working great (much faster than via the pcu ) via darktable
  Debug information from darktable :  ( if it's can help ) 
  [opencl_init] device 0 `Tahiti' supports image sizes of 16384 x 16384
  [opencl_init] device 0 `Tahiti' allows GPU memory allocations of up to 1024MB
  [opencl_init] device 0: Tahiti 
       GLOBAL_MEM_SIZE:          2392MB
       MAX_WORK_GROUP_SIZE:      256
       MAX_WORK_ITEM_DIMENSIONS: 3
       MAX_WORK_ITEM_SIZES:      [ 256 256 256 ]
       DRIVER_VERSION:           1526.3 (VM)
       DEVICE_VERSION:           OpenCL 1.2 AMD-APP (1526.3)

  Don't known how to provide more information :
  - I have recompiled higin with debug information (no more information in the GUI)
  - don't known how to test nona from the commande line

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