# \#PISCES **URL:** https://nemo-ocean.discourse.group/tag/pisces/95.md [Latest](https://nemo-ocean.discourse.group/latest.md) · [Categories](https://nemo-ocean.discourse.group/categories.md) · [Tags](https://nemo-ocean.discourse.group/tags.md) --- ## [\[v.4.0.x\] Instability error and "p4zopt.f90" crash issue that occur on the same day](https://nemo-ocean.discourse.group/t/v-4-0-x-instability-error-and-p4zopt-f90-crash-issue-that-occur-on-the-same-day/312)
**Author:** [@Jin](https://nemo-ocean.discourse.group/u/Jin)\ **Replies:** 2\ **Last updated:** [24 August 2026 05:41 UTC](https://nemo-ocean.discourse.group/t/v-4-0-x-instability-error-and-p4zopt-f90-crash-issue-that-occur-on-the-same-day/312 "2026-08-24T05:41:06Z")
Dear all, I have set up ORCA2\_ICE\_PISCES in NEMO v4.0.6 using gfortran compiler. I met two significant errors for running model, which are the instability error and the p4zopt.f90 crash issue. I solved the problem temp… --- ## [\[v4.0.x\] \*p4zopt.f90\* crash: out of lower bound value for \`rkrgb\`](https://nemo-ocean.discourse.group/t/v4-0-x-p4zopt-f90-crash-out-of-lower-bound-value-for-rkrgb/290)
**Author:** [@ukocean](https://nemo-ocean.discourse.group/u/ukocean)\ **Replies:** 3\ **Last updated:** [24 August 2026 05:21 UTC](https://nemo-ocean.discourse.group/t/v4-0-x-p4zopt-f90-crash-out-of-lower-bound-value-for-rkrgb/290 "2026-08-24T05:21:51Z")
Dear users, I’m trying to run r4.0.7 version of nemo using r05 resolution and get the error message: forrtl: severe (408): fort: (3): Subscript #2 of the array RKRGB has value "-2147483648" which is less than the lower… --- ## [PISCES training session 2025 annoucement](https://nemo-ocean.discourse.group/t/pisces-training-session-2025-annoucement/865)
**Author:** [@rlod](https://nemo-ocean.discourse.group/u/rlod)\ **Replies:** 0\ **Last updated:** [14 March 2025 10:00 UTC](https://nemo-ocean.discourse.group/t/pisces-training-session-2025-annoucement/865 "2025-03-14T10:00:32Z")
Dear all, Registration for the next PISCES training session is open until 25 April 2025 This session is open primarily to beginners, but also to experienced users. Objectives : The objective of this practical session… --- ## [PISCES training session for advanced users 2024](https://nemo-ocean.discourse.group/t/pisces-training-session-for-advanced-users-2024/664)
**Author:** [@rlod](https://nemo-ocean.discourse.group/u/rlod)\ **Replies:** 2\ **Last updated:** [18 April 2024 09:04 UTC](https://nemo-ocean.discourse.group/t/pisces-training-session-for-advanced-users-2024/664 "2024-04-18T09:04:48Z")
Registration for the next PISCES advanced user’ training session is open until 10 May 2024 Objectives : The aim of this hands-on session is to explore different features and tuning possibilities with low-cost configurat… --- ## [\[v4.2.x\] 2-way coupling of PISCES sediment in regional setup freezes](https://nemo-ocean.discourse.group/t/v4-2-x-2-way-coupling-of-pisces-sediment-in-regional-setup-freezes/296)
**Author:** [@jhier](https://nemo-ocean.discourse.group/u/jhier)\ **Replies:** 6\ **Last updated:** [2 June 2022 06:47 UTC](https://nemo-ocean.discourse.group/t/v4-2-x-2-way-coupling-of-pisces-sediment-in-regional-setup-freezes/296 "2022-06-02T06:47:36Z")
Hi, I’m attempting to run nemo-pisces with 2way sediments in a regional Baltic- North Sea setup. The model runs fine without sediments as well as with one way sediments. When trying out the 2 way coupling the model free… --- ## [PISCES Advanced Training Announcement](https://nemo-ocean.discourse.group/t/pisces-advanced-training-announcement/284)
**Author:** [@rlod](https://nemo-ocean.discourse.group/u/rlod)\ **Replies:** 1\ **Last updated:** [10 May 2022 14:09 UTC](https://nemo-ocean.discourse.group/t/pisces-advanced-training-announcement/284 "2022-05-10T14:09:23Z")
Dear marine biogeochemistry modelers, Registration for the advanced training session on PISCES is open from April 18 to May 18, 2022. The training session will take place from October 11 to 13, 2022 in Paris (18 people…