Fix double offset grid size on CellList gpu

6 jobs for Dcpse_gpu in 10 minutes and 58 seconds (queued for 7 seconds)
Status Job ID Name Coverage
  Build
passed centos_build #14690
centos

00:01:42

passed mac_build #14691
mac

00:01:54

passed ubuntu_build #14692
ubuntu

00:04:20

 
  Test
passed centos_run #14693
centos

00:04:36

passed mac_run #14694
mac

00:04:09

passed ubuntu_run #14695
ubuntu

00:06:35