<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">It now seems to me that petsc+mpich is no longer valgrind clean, or I am doing something wrong.<div class=""><br class=""></div><div class="">A simple program:</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Program test<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">#include "petsc/finclude/petscsys.h"<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> use petscsys<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> PetscInt :: ierr<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> call PetscInitialize(PETSC_NULL_CHARACTER,ierr)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> call PetscFinalize(ierr)</div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">end program test</div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">PETSc compiled in debug mode, complex scalars, and download-mpich, when run with valgrind generates errors like these:</div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><div style="margin: 0in; font-size: 11pt;" class="">==3997== Syscall param writev(vector[...]) points to uninitialised byte(s)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== at 0x8C31867: writev (writev.c:26)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9C20DE4: MPL_large_writev (mpl_sock.c:31)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BF1050: MPIDI_CH3I_Sock_writev (sock.c:2689)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BF9812: MPIDI_CH3_iStartMsgv (ch3_istartmsgv.c:92)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BA7790: MPIDI_CH3_EagerContigSend (ch3u_eager.c:191)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BCA7EC: MPID_Send (mpid_send.c:132)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BCAC64: MPID_Send_coll (mpid_send.c:206)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9A2AC7C: MPIC_Send (helper_fns.c:126)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x993A645: MPIR_Bcast_intra_binomial (bcast_intra_binomial.c:146)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FF64A: MPIR_Bcast_allcomm_auto (mpir_coll.c:323)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FFC06: MPIR_Bcast_impl (mpir_coll.c:420)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FCF86: MPID_Bcast (mpid_coll.h:30)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FFE13: MPIR_Bcast (mpir_coll.c:465)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x974A513: internal_Bcast (bcast.c:93)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x974A72B: PMPI_Bcast (bcast.c:143)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4B8D6DB: PETScParseFortranArgs_Private (zstart.c:182)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4B8DDFA: PetscInitFortran_Private (zstart.c:200)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4B34931: PetscInitialize_Common (pinit.c:974)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4B8E8C7: petscinitializef_ (zstart.c:284)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4959434: __petscsys_MOD_petscinitializenohelp (petscsysmod.F90:374)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== Address 0x1ffeffcac0 is on thread 1's stack<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== in frame #4, created by MPIDI_CH3_EagerContigSend (ch3u_eager.c:160)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== Uninitialised value was created by a stack allocation<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== at 0x9BA7601: MPIDI_CH3_EagerContigSend (ch3u_eager.c:160)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997==<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== Syscall param write(buf) points to uninitialised byte(s)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== at 0x8C2B697: write (write.c:26)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BF0F1D: MPIDI_CH3I_Sock_write (sock.c:2614)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BF7AAE: MPIDI_CH3_iStartMsg (ch3_istartmsg.c:68)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BA7A27: MPIDI_CH3_EagerContigShortSend (ch3u_eager.c:262)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BCA766: MPID_Send (mpid_send.c:119)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9BCAC64: MPID_Send_coll (mpid_send.c:206)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x9A2AC7C: MPIC_Send (helper_fns.c:126)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x993A645: MPIR_Bcast_intra_binomial (bcast_intra_binomial.c:146)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FF64A: MPIR_Bcast_allcomm_auto (mpir_coll.c:323)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FFC06: MPIR_Bcast_impl (mpir_coll.c:420)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FCF86: MPID_Bcast (mpid_coll.h:30)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x99FFE13: MPIR_Bcast (mpir_coll.c:465)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x974A513: internal_Bcast (bcast.c:93)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x974A72B: PMPI_Bcast (bcast.c:143)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4DB95A2: PetscOptionsGetenv (pdisplay.c:61)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4E0D745: PetscStrreplace (str.c:572)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4AC8DEA: PetscOptionsFilename (options.c:416)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4ACF0B5: PetscOptionsInsertFile (options.c:632)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4AD3CB5: PetscOptionsInsert (options.c:861)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== by 0x4B8E0EF: PetscInitFortran_Private (zstart.c:206)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== Address 0x1ffeff7998 is on thread 1's stack<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== in frame #3, created by MPIDI_CH3_EagerContigShortSend (ch3u_eager.c:223)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== Uninitialised value was created by a stack allocation<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997== at 0x9BA788F: MPIDI_CH3_EagerContigShortSend (ch3u_eager.c:223)<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt;" class="">==3997==</div><div style="margin: 0in; font-size: 11pt;" class=""><br class=""></div><div style="margin: 0in; font-size: 11pt;" class="">Is this a known issue or am I doing something wrong?</div><div style="margin: 0in; font-size: 11pt;" class=""><br class=""></div><div style="margin: 0in; font-size: 11pt;" class="">Thanks, Randy</div></div></body></html>