Dear All I have a fedora pc which some times cannot have an internet connection. I found that I can run non-Petsc MPI programs when it is not connected to the internet. However, when I try to run my Petsc based program without a connection, I get the following error. By googling a little bit, I found that the mpi launcher requires to log into each of the 4 procs the pc has, and may be using ssh. This or something else may or may not require an internet connection. In my present installation of petsc, I have downloaded and installed all required dependencies (blas, lapack, sundials) including mpich during the configure. I am using a makefile that I took from the ts examples for ex15.c where I changed the ex15 entry to sk2d (my program). I updated the petsc independent mpich to be the same version as the one I got with petsc.
Is there a way of configuring or otherwise to get Petsc programs to run when I do not have an internet connection? the error: mpiexec -n 3 ./sk2d Fatal error in PMPI_Init_thread: Other MPI error, error stack: MPIR_Init_thread(498)..............: MPID_Init(187).....................: channel initialization failed MPIDI_CH3_Init(89).................: MPID_nem_init(320).................: MPID_nem_tcp_init(171).............: MPID_nem_tcp_get_business_card(418): MPID_nem_tcp_init(377).............: gethostbyname failed, sanjayslaptop.maths.liv.ac.uk (errno 2) cheers Sanjay
