# Skydel 23.5.4 CUDA FFT ERROR Value: 5 **URL:** \ **Category:** Building a System\ **Created:** [August 16, 2023, 2:13pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148 "2023-08-16T14:13:10Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![grote](https://avatars.discourse-cdn.com/v4/letter/g/4af34b/32.png) [@grote](https://learn.safran-navigation-timing.com/u/grote)\ **Post date:** [August 16, 2023, 2:13pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148/1 "2023-08-16T14:13:10Z")
Hello, We have Skydel installed on a machine running Ubuntu 20.04.6 LTS and have followed the steps listed on the Skydel User Manual to get everything setup. Whenever we try to start a NoneRT simulation or a GPU test we are getting the following error: ![cuda_error](https://canada1.discourse-cdn.com/flex030/uploads/orolia/original/1X/8ed84373479690a0647597fd450915f15c41a660.png) We are using an Nvidia RTX 4070 with the recommended Nvidia driver metapackage from nvidia-driver-535 (proprieatary) pictured below and the output of nvidia-smi is also shown below: ![driver_installed](https://canada1.discourse-cdn.com/flex030/uploads/orolia/original/1X/c3ca3f7319908b646192c7208687d4d666866f38.png) ![nvidia_smi](https://canada1.discourse-cdn.com/flex030/uploads/orolia/original/1X/a2612a9dd9696a782c1c80f27068c10b11e83f53.png) Is there an installation step we are missing for getting our system up and simulating? I have also attached a Skydel log file below. Thanks! [simulator.log](https://learn.safran-navigation-timing.com/uploads/short-url/kJIYfvExiKGz13jKRlOH4op4wkC.log) (9.7 KB) ---
**Author:** ![irene.lesquer](https://avatars.discourse-cdn.com/v4/letter/i/b4bc9f/32.png) [@irene.lesquer](https://learn.safran-navigation-timing.com/u/irene.lesquer)\ **Post date:** [August 17, 2023, 1:26pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148/2 "2023-08-17T13:26:38Z")
Hi grote, Same answer as in [this thread](https://learn.safran-navigation-timing.com/t/cuda-compute-capability-8-9/1139/1)! We will upgrade CUDA version in the next major release of Skydel. It should be out by the end of September and this issue will be fixed! Have a good day, ---
**Author:** ![A-D](https://avatars.discourse-cdn.com/v4/letter/a/50afbb/32.png) [@A-D](https://learn.safran-navigation-timing.com/u/A-D)\ **Post date:** [August 22, 2023, 3:42pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148/3 "2023-08-22T15:42:12Z")
Good news, @grote ! The CUDA fix will be released sooner than planned. We will be releasing a new Skydel version **before the end of this month**. Thanks for your patience! ---
**Author:** ![grote](https://avatars.discourse-cdn.com/v4/letter/g/4af34b/32.png) [@grote](https://learn.safran-navigation-timing.com/u/grote)\ **Post date:** [September 5, 2023, 2:21pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148/4 "2023-09-05T14:21:37Z")
Hello, Where may we obtain the new version of Skydel? I do not see any release notes yet. Thanks! ---
**Author:** ![A-D](https://avatars.discourse-cdn.com/v4/letter/a/50afbb/32.png) [@A-D](https://learn.safran-navigation-timing.com/u/A-D)\ **Post date:** [September 5, 2023, 2:50pm UTC](https://learn.safran-navigation-timing.com/t/skydel-23-5-4-cuda-fft-error-value-5/1148/5 "2023-09-05T14:50:38Z")
Hello @grote , All Skydel updates can be accessed from the following link: > **[Skydel Software Updates - Safran - Navigation & Timing](https://safran-navigation-timing.com/document/skydel-software-updates/)** > > Link to the site that provides software versions of Skydel. This is for customers only so login, password, and license are required for access. Version 23.8 will be released any day now. Release notes can be found here: [https://learn.safran-navigation-timing.com/t/skydel-release-notes/222/11](https://learn.safran-navigation-timing.com/t/skydel-release-notes/222/11)