[Bug middle-end/19974] New: Lapack hang in xeigtstc on ia-64
Thomas dot Koenig at online dot de
gcc-bugzilla@gcc.gnu.org
Tue Feb 15 21:20:00 GMT 2005
Checking Lapack with flag_complex_method = 2 on
ia64-unknown-linux-gnu with -O0, I got a hang in xeigtstc
when processing sep.in, in the routine slarrb.f.
The compiler was the 20050213 snapshot.
This may not have anything to do with the setting of
flag_complex_method, because the routine in question
does not have any complex variables.
The code where it hangs looks like this:
DO 70 J = 1, N - 1
TMP = D( J ) + S
S = S*( LD( J ) / TMP )*L( J ) - RIGHT
IF( TMP.LT.ZERO )
$ CNT = CNT + 1
70 CONTINUE
Here's a sample gdb session:
$ gdb xeigtstc
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This GDB was configured as "ia64-redhat-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".
(gdb) r
Starting program: /home/zfkts/zfkts/LAPACK-gfortran/TESTING/xeigtstc
Program received signal SIGINT, Interrupt.
0x200000000037bbc1 in read () from /lib/tls/libc.so.6.1
(gdb) r < sep.in
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/zfkts/zfkts/LAPACK-gfortran/TESTING/xeigtstc < sep.in
Tests of the Hermitian Eigenvalue Problem routines
LAPACK VERSION 3.0, released June 30, 1999
The following parameter values will be used:
M: 0 1 2 3 5 20
N: 0 1 2 3 5 20
NB: 1 3 3 3 10
NBMIN: 2 2 2 2 2
NX: 1 0 5 9 1
Relative machine underflow is taken to be 0.117549E-37
Relative machine overflow is taken to be 0.340282E+39
Relative machine precision is taken to be 0.596046E-07
Routines pass computational tests if test ratio is less than 50.00
CST routines passed the tests of the error exits (114 tests done)
SEP: NB = 1, NBMIN = 2, NX = 1
All tests for CST passed the threshold ( 4662 tests run)
All tests for CST drivers passed the threshold ( 11664 tests run)
SEP: NB = 3, NBMIN = 2, NX = 0
CST -- Complex Hermitian eigenvalue problem
Matrix types (see CCHKST for details):
Special Matrices:
1=Zero matrix. 5=Diagonal: clustered entries.
2=Identity matrix. 6=Diagonal: large, evenly spaced.
3=Diagonal: evenly spaced entries. 7=Diagonal: small, evenly spaced.
4=Diagonal: geometr. spaced entries.
Dense Hermitian Matrices:
8=Evenly spaced eigenvals. 12=Small, evenly spaced eigenvals.
9=Geometrically spaced eigenvals. 13=Matrix with random O(1) entries.
10=Clustered eigenvalues. 14=Matrix with large random entries.
11=Large, evenly spaced eigenvals. 15=Matrix with small random entries.
16=Positive definite, evenly spaced eigenvalues
17=Positive definite, geometrically spaced eigenvlaues
18=Positive definite, clustered eigenvalues
19=Positive definite, small evenly spaced eigenvalues
20=Positive definite, large evenly spaced eigenvalues
21=Diagonally dominant tridiagonal, geometrically spaced eigenvalues
Test performed: see CCHKST for details.
Matrix order= 5, type= 9, seed= 894,3587, 994, 217, result 36 is 62.23
CST: 1 out of 4662 tests failed to pass the threshold
All tests for CST drivers passed the threshold ( 11664 tests run)
SEP: NB = 3, NBMIN = 2, NX = 5
All tests for CST passed the threshold ( 4662 tests run)
All tests for CST drivers passed the threshold ( 11664 tests run)
SEP: NB = 3, NBMIN = 2, NX = 9
CST -- Complex Hermitian eigenvalue problem
Matrix types (see CCHKST for details):
Special Matrices:
1=Zero matrix. 5=Diagonal: clustered entries.
2=Identity matrix. 6=Diagonal: large, evenly spaced.
3=Diagonal: evenly spaced entries. 7=Diagonal: small, evenly spaced.
4=Diagonal: geometr. spaced entries.
Dense Hermitian Matrices:
8=Evenly spaced eigenvals. 12=Small, evenly spaced eigenvals.
9=Geometrically spaced eigenvals. 13=Matrix with random O(1) entries.
10=Clustered eigenvalues. 14=Matrix with large random entries.
11=Large, evenly spaced eigenvals. 15=Matrix with small random entries.
16=Positive definite, evenly spaced eigenvalues
17=Positive definite, geometrically spaced eigenvlaues
18=Positive definite, clustered eigenvalues
19=Positive definite, small evenly spaced eigenvalues
20=Positive definite, large evenly spaced eigenvalues
21=Diagonally dominant tridiagonal, geometrically spaced eigenvalues
Test performed: see CCHKST for details.
Matrix order= 20, type= 9, seed=1052,3651,3662,3633, result 35 is 69.27
Matrix order= 20, type= 9, seed=1052,3651,3662,3633, result 36 is 2182.68
CST: 2 out of 4662 tests failed to pass the threshold
CST -- Complex Hermitian eigenvalue problem
Matrix types (see xDRVST for details):
Special Matrices:
1=Zero matrix. 5=Diagonal: clustered entries.
2=Identity matrix. 6=Diagonal: large, evenly spaced.
3=Diagonal: evenly spaced entries. 7=Diagonal: small, evenly spaced.
4=Diagonal: geometr. spaced entries.
Dense Hermitian Matrices:
8=Evenly spaced eigenvals. 12=Small, evenly spaced eigenvals.
9=Geometrically spaced eigenvals. 13=Matrix with random O(1) entries.
10=Clustered eigenvalues. 14=Matrix with large random entries.
11=Large, evenly spaced eigenvals. 15=Matrix with small random entries.
Tests performed: See cdrvst.f
Matrix order= 20, type= 9, seed=1494,3156,1807,2209, result 101 is 353.18
(wait for a long time...)
Program received signal SIGINT, Interrupt.
slarrb_ (n=@0x4, d=0x4, l=0x4, ld=0x4, lld=0x4, ifirst=@0x4, ilast=@0x4,
sigma=@0x4, reltol=Cannot access memory at address 0x1
) at slarrb.f:191
191 TMP = D( N ) + S
Current language: auto; currently fortran
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
slarrb_ (n=@0x7fc000007f800000, d=0x7fc000007f800000, l=0x7fc000007f800000,
ld=0x7fc000007f800000, lld=0x7fc000007f800000, ifirst=@0x7fc000007f800000,
ilast=@0x7fc000007f800000, sigma=@0x7fc000007f800000, reltol=Cannot access
memory at address 0x0
)
at slarrb.f:195
195 DELTA = TWO*DELTA
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
slarrb_ (n=Cannot access memory at address 0x1
) at slarrb.f:185
185 DO 70 J = 1, N - 1
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
slarrb_ (n=@0x47fc00000, d=0x47fc00000, l=0x47fc00000, ld=0x47fc00000,
lld=0x47fc00000, ifirst=@0x47fc00000, ilast=@0x47fc00000,
sigma=@0x47fc00000, reltol=Cannot access memory at address 0x0
) at slarrb.f:183
183 S = -RIGHT
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
0x400000000047fd71 in slarrb_ (n=@0x47fc00000, d=0x47fc00000, l=0x47fc00000,
ld=0x47fc00000, lld=0x47fc00000, ifirst=@0x47fc00000, ilast=@0x47fc00000,
sigma=@0x47fc00000, reltol=Cannot access memory at address 0x0
) at slarrb.f:183
183 S = -RIGHT
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
0x400000000047fe91 in slarrb_ (n=Cannot access memory at address 0x3
) at slarrb.f:187
187 S = S*( LD( J ) / TMP )*L( J ) - RIGHT
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
0x4000000000480111 in slarrb_ (n=@0x7fc000007fc00000, d=0x7fc000007fc00000,
l=0x7fc000007fc00000, ld=0x7fc000007fc00000, lld=0x7fc000007fc00000,
ifirst=@0x7fc000007fc00000, ilast=@0x7fc000007fc00000,
sigma=@0x7fc000007fc00000, reltol=Cannot access memory at address 0x3
) at slarrb.f:191
191 TMP = D( N ) + S
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
0x400000000047fe70 in slarrb_ (n=@0x7fc000007fc00000, d=0x7fc000007fc00000,
l=0x7fc000007fc00000, ld=0x7fc000007fc00000, lld=0x7fc000007fc00000,
ifirst=@0x7fc000007fc00000, ilast=@0x7fc000007fc00000,
sigma=@0x7fc000007fc00000, reltol=Cannot access memory at address 0x1
) at slarrb.f:186
186 TMP = D( J ) + S
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
slarrb_ (n=@0x60000000000d5cf8, d=0x60000000000d5cf8, l=0x60000000000d5cf8,
ld=0x60000000000d5cf8, lld=0x60000000000d5cf8, ifirst=@0x60000000000d5cf8,
ilast=@0x60000000000d5cf8, sigma=@0x60000000000d5cf8, reltol=Cannot access
memory at address 0x1
)
at slarrb.f:187
187 S = S*( LD( J ) / TMP )*L( J ) - RIGHT
--
Summary: Lapack hang in xeigtstc on ia-64
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Thomas dot Koenig at online dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19974
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