# Memory space error at recon stage **URL:** \ **Category:** Unified Model\ **Created:** [10 June 2024 11:03 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442 "2024-06-10T11:03:24Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![mfleg](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@mfleg](https://cms-helpdesk.ncas.ac.uk/u/mfleg)\ **Post date:** [10 June 2024 11:03 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/1 "2024-06-10T11:03:24Z")
Hi, I’ve been trying to run a UKESM1.0 AMIP version of the UM with some changed inputs, working in u-de347. For now, I am just trying to run one month of the model to check it works with my changes. However, I have been getting this error for recon: lib-4205 : UNRECOVERABLE library error The program was unable to request more memory space. tcmalloc: large alloc 1441714830712012800 bytes == (nil) My jobs have also been stuck in queues for a long time; last time it took six days just to get to the (failed) recon stage; it seems like the jobs are slower with every iteration I try. I don’t think I’ve been overusing the queues (as I am literally just running this one simple job every few days), so I don’t think I would be getting deprioritised for that reason. It’s really frustrating because it’s now taking weeks just to figure out if my model set up works. Any advice would be appreciated! ---
**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\ **Post date:** [10 June 2024 11:24 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/2 "2024-06-10T11:24:05Z")
It looks like the reconfiguration is trying to read a file that has the wrong endianness. What inputs did you change? Grenville ---
**Author:** ![mfleg](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@mfleg](https://cms-helpdesk.ncas.ac.uk/u/mfleg)\ **Post date:** [10 June 2024 13:02 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/3 "2024-06-10T13:02:56Z")
Hi Grenville, thanks for your reply. I am trying to use my own values for surface albedo (stash requests 244 and 245). The original albedo file used by the model, when ancil file is not specified, is a .land file. I haven’t been able to figure out what format that is exactly, but I am inputting a netcdf file with a manually added .land extension. I’m not sure this is the way to go to be honest - I had a discussion with Patrick about it here: [Changing albedo climatology in JULES](https://cms-helpdesk.ncas.ac.uk/t/changing-albedo-climatology-in-jules/1368). The file I am inputting is a copy of one of the albedo files in /work/y07/shared/umshared/ancil/atmos - I believe that is the destination the files are normally taken from when not manually specified - with some changes to the values. ---
**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\ **Post date:** [10 June 2024 14:33 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/4 "2024-06-10T14:33:11Z")
Please allow us read permissions on your /work and /home spaces on ARCHER2 on an ARCHER2 login node chmod -R g+rX /home/n02/n02/mfleg chmod -R g+rX /work/n02/n02/mfleg ---
**Author:** ![mfleg](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@mfleg](https://cms-helpdesk.ncas.ac.uk/u/mfleg)\ **Post date:** [10 June 2024 15:10 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/5 "2024-06-10T15:10:57Z")
Thanks Grenville, I’ve done that now ---
**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\ **Post date:** [11 June 2024 15:29 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/6 "2024-06-11T15:29:29Z")
Michaela Ancillary files are in proprietary UM fields-file format (the .land extension is just a convenience and has no relevance to the file format.) I think there is an easier way to create your own ancillary file for stash items 244 and 245. 1. use xconv to convert the currently used albedo ancil file into a netcdf file 2. use netcdf4 to change the data but preserve all metadata, variable names etc 3. use xancil to convert the modified netcdf file back to ancillary file format. I ran a test case, without step 2, starting from (arbitrarily) /work/y07/shared/umshared/ancil/atmos/n96e/general\_land/GlobAlbedo/v2/qrclim.land that worked without any problems. xconv (very intuitive) and xancil ([Xancil 0.58 documentation](https://ncas-cms.github.io/xancil-doc/singlehtml/index.html)) are both installed on ARCHER2. Grenville ---
**Author:** ![mfleg](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@mfleg](https://cms-helpdesk.ncas.ac.uk/u/mfleg)\ **Post date:** [1 July 2024 12:37 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/7 "2024-07-01T12:37:52Z")
Hi Grenville, Thanks for this - this seems to have solved my issue as far as I can tell. I’ve been trying to test it and I am now running into another problem, getting this error: ? Error code: 1 ? Error from routine: portio2a:flush\_unit\_buffer ? Error message: Failed in output\_buffer() ? Error from processor: 0 ? Error number: 72 It seems to be a memory space issue. Would it be possible to increase my /work quota, please? ---
**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\ **Post date:** [1 July 2024 13:17 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/8 "2024-07-01T13:17:17Z")
increased to 1TB (enough?) Grenville ---
**Author:** ![mfleg](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@mfleg](https://cms-helpdesk.ncas.ac.uk/u/mfleg)\ **Post date:** [1 July 2024 13:29 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/9 "2024-07-01T13:29:59Z")
Should be enough, thank you! ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\ **Post date:** [31 July 2024 13:30 UTC](https://cms-helpdesk.ncas.ac.uk/t/memory-space-error-at-recon-stage/1442/10 "2024-07-31T13:30:05Z")
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