Re: snapshot file problem

From: Volker Springel <vspringel_at_MPA-Garching.MPG.DE>
Date: Thu, 30 Sep 2021 15:08:51 +0200

Hi Weiguang,

> On 30. Sep 2021, at 14:23, Weiguang Cui <cuiweiguang_at_gmail.com> wrote:
>
> Dear all,
>
> I recently encountered a problem of snapshot saving with this option on
> SUBFIND_STORE_LOCAL_DENSITY in the Config.sh file
>
> The snapshot seems broken:
> h5ls snapdir_037/snap_m200n2048-prevmostboundonly_037.0
> snapdir_037/snap_m200n2048-prevmostboundonly_037.0: unable to open file
>

Are you sure the file isn't there? Try

h5ls snapdir_037/snap_m200n2048-prevmostboundonly_037.0.hdf5

Best,
Volker



> While the log file for this saving part seems fine:
>
> SUBFIND: Subgroup catalogues saved. took = 8.55254 sec
> SUBFIND: Finished with SUBFIND. (total time=1354.58 sec)
> SUBFIND: Total number of subhalos with at least 32 particles: 8194200
> SUBFIND: Largest subhalo has 19083775 particles/cells.
> SUBFIND: Total number of particles/cells in subhalos: 4322986506
> FOF: preparing output order of particles took 101.057 sec
> MERGERTREE: writing descendant information file: './/groups_038/subhalo_desc_038.0' (file 1 of 32)
> MERGERTREE: writing descendant information block 0 (DescSubhaloNr)...
> MERGERTREE: writing descendant information block 1 (FirstDescSubhaloNr)...
> MERGERTREE: writing descendant information block 2 (NextProgSubhaloNr)...
> MERGERTREE: writing descendant information block 3 (SubhaloNr)...
> MERGERTREE: writing progenitor information file: './/groups_039/subhalo_prog_039.0' (file 1 of 32)
> MERGERTREE: writing progenitor information block 0 (ProgSubhaloNr)...
> MERGERTREE: writing progenitor information block 1 (FirstProgSubhaloNr)...
> MERGERTREE: writing progenitor information block 2 (NextDescSubhaloNr)...
> MERGERTREE: writing progenitor information block 3 (SubhaloNr)...
> MERGERTREE: Was able to identify descendants for 8105748 out of 8266010 subhalos, i.e. for a fraction of 0.980612
> MERGERTREE: We have found secondary descendants for 10600 halos out of 8194200 subhalos, i.e. for a fraction of 0.0012936
>
> SNAPSHOT: writing snapshot file #39 _at_ time 1 ...
> SNAPSHOT: writing snapshot file: './/snapdir_039/snap_m200n2048-prevmostboundonly_039.0' (file 1 of 32)
> SNAPSHOT: writing snapshot block 0 (Coordinates)...
> SNAPSHOT: writing snapshot block 1 (Velocities)...
> SNAPSHOT: writing snapshot block 2 (ParticleIDs)...
> SNAPSHOT: writing snapshot block 7 (SubfindDensity)...
> SNAPSHOT: writing snapshot block 8 (SubfindHsml)...
> SNAPSHOT: writing snapshot block 9 (SubfindVelDisp)...
> SNAPSHOT: done with writing snapshot. Took 20.3367 sec, total size 2591.43 MB, corresponds to effective I/O rate of 127.426 MB/sec
>
> SNAPSHOT: There is no valid time for a further snapshot file.
>
> Final time=1 reached. Simulation ends.
> RESTART: Writing restart files.
> RESTART: Backing up restart files...
> RESTART: done renaming pre-existing restart files to bak files.
> RESTART: Writing restart files group #1 out of 7...
> RESTART: Writing restart files group #2 out of 7...
> RESTART: Writing restart files group #3 out of 7..
> RESTART: Writing restart files group #4 out of 7...
> RESTART: Writing restart files group #5 out of 7...
> RESTART: Writing restart files group #6 out of 7...
> RESTART: Writing restart files group #7 out of 7...
> RESTART: done. load/save took 201.084 sec, total size 1.34741e+06 MB, corresponds to effective I/O rate of 6700.74 MB/sec
> endrun called, calling MPI_Finalize()
> bye!
>
> Please let me know if this has only happened to me.
>
> Best,
> Weiguang
>
> -------------------------------------------
> https://weiguangcui.github.io/
>
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Received on 2021-09-30 15:09:29

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