Fortran Error Sigsegv
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Gfortran Segmentation Fault
Segmentation Faults SIGSEGV or SIGBUS errors Added September 29, 2011 Translating...TranslateChinese SimplifiedChinese TraditionalEnglishFrenchGermanItalianPortugueseRussianSpanishTurkish This sigsegv, segmentation fault occurred vasp is a computer translation of the original content. It is provided for general information only and should not be relied upon as complete segmentation fault in fortran 90 or accurate. Share Tweet Share Problem : When I run my code compiled with the Intel Fortran Compiler I get 'sigsegv' on linux (or sigbus on Mac OS X). This code has run fine for years on
Sigsegv Segmentation Fault Occurred Fortran
with the Intel Compiler?Environment : linux or Mac OS* XRoot Cause : There are many possible causes. A segmention fault (bus error Mac OS X) is a general fault that can have multiple causes. We outline these potential causes below and give suggestions for avoiding the segmentation faultPossible Cause #1 Fortran Specific Stackspace Exhaustion: Solution, -heap-arrays compiler option. The Intel Fortran Compiler use stack space to allocate a number of temporary or intermediate copies of array data. NON-OpenMP and NON-Auto-parallelized Applications: IF your program is not using OpenMP or Auto-parallelization (-parallel compiler switch) and your compiler is newer than Linux v9.1.037 (or all Mac OS* compilers), try the -heap-arrays compiler option. OpenMP or Auto-parallelization users and users with Linux compilers older than v9.1.037 please read ahead to Possible Cause #2 for tips on unlimiting the stack size. -heap-arrays
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Program Received Signal Sigsegv: Segmentation Fault - Invalid Memory Reference. Quantum Espresso
Join them; it only takes a minute: Sign up Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: up vote -3 down vote favorite I have compiled a fortran 95 program in Ubuntu 14.04. https://software.intel.com/en-us/articles/determining-root-cause-of-sigsegv-or-sigbus-errors Upon running, I got the following error: This is different from:(1) Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: ^Z [9]+ Stopped ./a.out I even tried gfortran -g -fcheck=all -Wall DoubExchange.f95 But got the same fault message. My program: ! HAMILTONIAN Diagonalization for a 2D Lattice of N sites or (N_X) X (N_Y) size, with DOUBLE EXCHANGE. ! ! ! D O U B L E E X C H A N G http://stackoverflow.com/questions/26076557/program-received-signal-sigsegv-segmentation-fault-invalid-memory-reference E ! ! ! PROGRAM DOUBLE_EXCHANGE implicit none integer:: I, J, K, M, Z, P, L, SIZ, CONT, POINT, S integer,parameter :: seed = 8645642 ! character:: N, U real*8:: H real :: start, finish ! .. Parameters .. INTEGER N, N_X, N_Y INTEGER LDA INTEGER LWMAX PARAMETER ( LWMAX = 1000 ) ! ! .. Local Scalars .. ! INTEGER INFO, LWORK ! ! .. Local Arrays .. ! RWORK dimension should be at least MAX(1,3*N-2) ! DOUBLE PRECISION,ALLOCATABLE,DIMENSION(:):: EIG REAL*8,ALLOCATABLE,DIMENSION(:,:):: F1 REAL*8,ALLOCATABLE,DIMENSION(:):: WORK call cpu_time(start) open(1,file='DOUBLE_EXCHANGE.dat') open(2,file='DOUBLE_EXCHANGE.txt') ! ! We are considering a 2D square lattice of 3 X 3 ! CALL srand(seed) !! LATTICE DESCRIPTION !! N_X = 2 N_Y = 2 SIZ = 2 * N_X * N_Y N = SIZ*SIZ LDA = N ! PROGRAM STARTING POINT ! ALLOCATE(F1( SIZ, SIZ ), EIG(SIZ), WORK(3*siz-1)) CONT = 1 S = (N_X*2)-1 M = N_Y-1 DO P=1,1 DO I=0,M DO J=0,S POINT = 1 DO K=0,M DO L=0,S IF(I==K .AND. ABS(J-L)==2) THEN Z = -1 ELSE IF(J==L .AND. ABS(I-K)==1) THEN Z = -1 ELSE IF(J==L .AND. ABS(I-K)==M) THEN Z = -1 ELSE IF(I==K .AND. ABS(J-L)==S-1) THEN Z = -1 ELSE IF(I==K .AND. J==L) THEN Z = (-1)**POINT ELSE Z = 0 ! Potential 0 ENDIF F1(CONT,POINT) = Z POINT = POINT + 1 ENDDO ENDDO CONT = CONT + 1 ENDDO ENDDO WRITE(1,*) ! WRITE(1,*),'Displaying Matrix for the given Hamiltonian
here for a quick overview of the site Help Center Detailed answers to any questions http://stackoverflow.com/questions/31257222/what-is-segmentation-fault-invalid-memory-reference-error-in-fortran you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring http://forums.approximatrix.com/viewtopic.php?id=158 developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is segmentation fault a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up what is “segmentation fault - invalid memory reference error” in FORTRAN up vote -2 down vote favorite I am receiving the following error in my Fortran code : Program received signal SIGSEGV: fortran segmentation fault Segmentation fault - invalid memory reference. Backtrace for this error: #0 0x7F80C7B46777 #1 0x7F80C7B46D7E #2 0x7F80C7282D3F #3 0x402D1A in __mymodule_MOD_gcr_mfree #4 0x412175 in MAIN__ at HUHSI1.f90:? Segmentation fault (core dumped) ------------------ (program exited with code: 139) I don't understand this error completely. What is this error? Number 3 indicates the following subroutine : SUBROUTINE gcr_Mfree(F2,Cnew,Cold,C_Fold,xm,converged) !**** FUNCTIONS TO BE SOLVED **** ! Generalized Conjugate Residual Algorithm ! Solves M*x=b (J*dx=-F) IMPLICIT REAL*8 (A-H,O-Z) INTEGER, intent(out) :: converged REAL*8, DIMENSION(:,:), ALLOCATABLE :: F2,p,Mp REAL*8, DIMENSION(:), ALLOCATABLE :: F2V,F22V,CnewV,ColdV,C_FoldV,alpha2,r,b,Mr,xv ! 2D INPUT VARIABLE DIMENSIONS: DIMENSION F22(-2:IG+2,-2:JG+2) DIMENSION Cnew(-2:IG+2,-2:JG+2) DIMENSION Cold(-2:IG+2,-2:JG+2) DIMENSION C_Fold(-2:IG+2,-2:JG+2) DIMENSION xm(-2:IG+2,-2:JG+2) integer :: j,maxiter,iter real*8 :: tol,normr !=================================================================== MASK = SIZE(F2) ! Size of F2 : (IG+5)*(JG+5) Print*, 'MASK IS EQUAL TO',MASK ALLOCATE(F2V(1:MASK)) ALLOCATE(CnewV(1:MASK)) ALLOCATE(ColdV(1:MASK)) ALLOCATE(C_FoldV(1:MASK)) ALLOCATE(xv(1:MASK)) ALLOCATE(r(1:MASK)) ALLOCATE(b(1:MASK)) ALLOCATE(p(1:IG,1:JG)) ALLOCATE(Mp(1:IG,1:JG)) !************* RESHAPING MATRICES TO VECTORS ************** F2V = RESHAPE(F2 ,(/MASK/)) ColdV = RESHAPE(Cold ,(/MASK/)) CnewV = RESHAPE(Cnew ,(/MASK/)) C_FoldV = RESHAPE(C_Fold,(/MASK/)) ! Write(*,*) shape(CnewV), shape(C
topics Server Issues Our server has been suffering some timeout issues after moving to a new machine. Please email support@approximatrix.com if you encounter any problems. We're working to resolve the problem. Debugger - Segmentation fault - SIGSEGV Approximatrix Forums →User Support →Debugger - Segmentation fault - SIGSEGV Pages 1 You must login or register to post a reply RSS topic feed Posts: 10 1 Topic by JohnT 2013-02-22 17:24:21 JohnT New member Offline Topic: Debugger - Segmentation fault - SIGSEGV My program compiles with the default settings without messages, but on Launching immediately returns the message:Program received signal SIGSEGV: Segmentation fault - invalid memory reference.Backtrace for this error:#0 fffffffffI see from the GNU Insight Forum that this fault is ongoing and several people have tried to patch it.What I need to know is which FORTRAN feature sets off this trap. I can perhaps program around it, if I know what causes the problem. The program stops on a USE instruction, before the first executable statement. 2 Reply by jeff 2013-02-22 18:22:13 jeff Administrator Offline Re: Debugger - Segmentation fault - SIGSEGV John,What architecture are you currently compiling for, 32- or 64-bit? This option is configurable in the Project Options window. You might try switching this option, if possible, depending on your operating system, and retry debugging.Let us know if you have any luck. Jeff ArmstrongApproximatrix, LLC 3 Reply by JohnT 2013-02-22 19:26:30 JohnT New member Offline Re: Debugger - Segmentation fault - SIGSEGV I loaded up vers. 1.39 yesterday and the compile default had become: C:\Programfiler\Simply Fortran\mingw-w64\bin\gfortran.exeI browsed my way to this program: C:\Programfiler\Simply Fortran\mingw-w64\x86_64-w64-mingw32\bin\gfortran.exeand set it as the compiler.The result was the following error message on the first of three files to be compiled:"C:\Programfiler\Simply Fortran\mingw-w64\x86_64-w64-mingw32\bin\gfortr