Studies in Computer Sciences and Practices in Software Engineering

Delete Files in a CVS Repository

I have a CVS repository hosted in a Windows 2000 Professional system. I installed CVSNT in the system. To use SSH for cvs, I also installed cygwin. Things has appeared to be working smoothly for quite some time. Then yesterday, I imported some source file into the repository but changed my mind. I set out to delete the files in the server using in the Windows Explore. But I kept getting the message that the files are in use. I stopped the CVSNT service, but the error persisted. It took a lot of digging, before I realize that a copy of cvs.exe inside cygwin is been used when a cvs request comes in via SSH. Using netstat, I confirmed that there's no server listening at the cvs port. cvs via SSH works anyway.

I came to the conclusion that by using ssh, the cvs command was tunnelled and executed in the server. The results are then transported back to the client via the ssh connection. And to delete any files created in the process, it has to be done withing cygwin.

19:11:55 on 11/18/07 by x mar - Programming - comments

My First ATLAS Installation

BIG_MM N=1600, mf=3692.20,3566.40!

The times labeled Reference are for ATLAS as installed by the authors.
NAMING ABBREVIATIONS:
   kSelMM : selected matmul kernel (may be hand-tuned)
   kGenMM : generated matmul kernel
   kMM_NT : worst no-copy kernel
   kMM_TN : best no-copy kernel
   BIG_MM : large GEMM timing (usually N=1600); estimate of asymptotic peak
   kMV_N  : NoTranspose matvec kernel
   kMV_T  : Transpose matvec kernel
   kGER   : GER (rank-1 update) kernel
Kernel routines are not called by the user directly, and their
performance is often somewhat different than the total
algorithm (eg, dGER perf may differ from dkGER)


Reference clock rate=2593Mhz, new rate=2400Mhz
   Refrenc : % of clock rate achieved by reference install
   Present : % of clock rate achieved by present ATLAS install

                    single precision                  double precision
            ********************************   *******************************
                  real           complex           real           complex
            ---------------  ---------------  ---------------  ---------------
Benchmark   Refrenc Present  Refrenc Present  Refrenc Present  Refrenc Present
=========   ======= =======  ======= =======  ======= =======  ======= =======
  kSelMM      325.9   310.2    327.4   310.2    167.7   130.9    169.9   175.4
  kGenMM       94.4    73.8     94.4    81.5     88.7    68.3     86.8    78.7
  kMM_NT       64.1    55.5     73.7    77.6     62.5    52.6     61.1    56.2
  kMM_TN       92.3    70.6     85.4    74.1     85.1    68.4     72.5    71.7
  BIG_MM      262.2   254.0    269.2   258.5    153.1   149.7    160.6   153.8
   kMV_N       44.0    39.9     60.7    45.3     28.6    20.0     45.3    36.3
   kMV_T       48.2    38.5     57.1    56.3     32.3    24.8     43.7    44.5
    kGER       22.4    20.8     44.1    44.4     11.6    12.0     26.5    26.8
make[1]: Leaving directory `/cygdrive/d/atlas3.8.0/Win_P4'

11:08:46 on 11/16/07 by x mar - Computer Science - comments
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