search for: bs4

...fact match the result if we use the Kahan algorithm. P. I am glad to see that R sum() is more accurate than the gfortran compiler sum. On 16/03/18 11:37 AM, luke-tierney at uiowa.edu wrote: > Install the gmp package, run your code, and then try this: > > bu <- gmp::as.bigq(u) > bs4 <- bu[1] + bu[2] + bu[3] + bu[4] + bu[5] > s4 <- as.double(bs4) > s1 - s4 > ## [1] 0 > s2[[2]] - s4 > ## [1] 7.105427e-15 > s3 - s4 > ## [1] 7.105427e-15 > identical(s1, s4) > ## [1] TRUE > > `bs4` is the exact sum of the binary rationals in your `u` vecto...

Install the gmp package, run your code, and then try this: bu <- gmp::as.bigq(u) bs4 <- bu[1] + bu[2] + bu[3] + bu[4] + bu[5] s4 <- as.double(bs4) s1 - s4 ## [1] 0 s2[[2]] - s4 ## [1] 7.105427e-15 s3 - s4 ## [1] 7.105427e-15 identical(s1, s4) ## [1] TRUE `bs4` is the exact sum of the binary rationals in your `u` vector; `s4` is the closest double precision to this exact...

Hi all, I found a discrepancy between the sum() in R and either a sum done in C or Fortran for vector of just 5 elements. The difference is very small, but this is a very small part of a much larger numerical problem in which first and second derivatives are computed numerically. This is part of a numerical method course I am teaching in which I want to compare speeds of R versus Fortran (We

I set up a 3.3 gluster volume for another sysadmin and he has added it to his cluster via automount. It seems to work initially but after some time (days) he is now regularly seeing this warning: "Too many levels of symbolic links" $ df: `/share/gl': Too many levels of symbolic links when he tries to traverse the mounted filesystems. I've been using gluster with static mounts

...uster volume is running over IPoIB on QDR IB and looks like this: Volume Name: gl Type: Distribute Volume ID: 21f480f7-fc5a-4fd8-a084-3964634a9332 Status: Started Number of Bricks: 8 Transport-type: tcp,rdma Bricks: Brick1: bs2:/raid1 Brick2: bs2:/raid2 Brick3: bs3:/raid1 Brick4: bs3:/raid2 Brick5: bs4:/raid1 Brick6: bs4:/raid2 Brick7: bs1:/raid1 Brick8: bs1:/raid2 Options Reconfigured: performance.write-behind-window-size: 1024MB performance.flush-behind: on performance.cache-size: 268435456 nfs.disable: on performance.io-cache: on performance.quick-read: on performance.io-thread-count: 64 auth....

...gluster volume was created using the IPoIB network and numbers: Volume Name: gl Type: Distribute Volume ID: 21f480f7-fc5a-4fd8-a084-3964634a9332 Status: Started Number of Bricks: 8 Transport-type: tcp,rdma Bricks: Brick1: bs2:/raid1 Brick2: bs2:/raid2 Brick3: bs3:/raid1 Brick4: bs3:/raid2 Brick5: bs4:/raid1 Brick6: bs4:/raid2 Brick7: bs1:/raid1 Brick8: bs1:/raid2 Options Reconfigured: nfs.disable: on performance.io-cache: on performance.quick-read: on performance.io-thread-count: 64 auth.allow: 10.2.*.*,10.1.*.* using 3.3 servers on SciLi 6.2 and 3.3.0qa42 clients. When trying to mount the gl...

Hi, I'm a bit curious of error messages of the type "remote operation failed: Stale NFS file handle". All clients using the file system use Gluster Native Client, so why should stale nfs file handle be reported? Regards, /jon -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi All, When reading some files we get this error: md5sum: /path/to/file.xml: Structure needs cleaning in /var/log/glusterfs/mnt-sharedfs.log we see these errors: [2013-12-10 08:07:32.256910] W [client-rpc-fops.c:526:client3_3_stat_cbk] 1-testvolume-client-0: remote operation failed: No such file or directory [2013-12-10 08:07:32.257436] W [client-rpc-fops.c:526:client3_3_stat_cbk]

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