From: Karthik Gopalakrishnan (gopalakk_at_cse.ohio-state.edu)
Date: Wed Jan 07 2009 - 12:42:39 PST
Hi Paul. Thanks!!! cr_poll_checkpoint() will work fine for me. Regards, Karthik On Wed, Jan 7, 2009 at 2:58 PM, Paul H. Hargrove <PHHargrove_at_lbl_dot_gov> wrote: > Karthik, > > I don't think you need to migrate to 0.8.x to get away from the > cr_request_fd() interface, because cr_request_checkpoint() and > cr_poll_checkpoint() were added in 0.6.0. > You mention using cr_wait_checkpoint() and cr_reap_checkpoint(), which *are* > new in 0.8.0. However, the cr_poll_checkpoint() function is approximately > equivalent to: > int err; > err = cr_wait_checkpoint(handle, timeout); > if (err < 0) return CR_POLL_CHKPT_ERR_PRE; > else if (!err) return 0; // Not done > err = cr_reap_checkpoint(handle); > if (err < 0) return CR_POLL_CHKPT_ERR_POST; > return 1; // Done > > So, I would suggest that you could replace your wait and reap calls with > cr_poll_checkpoint() to work correctly for 0.6.0 through 0.8.x. > > I hope this helps. > > -Paul > > Karthik Gopalakrishnan wrote: >> >> Hi Paul. >> >> My application that used BLCR 0.7.1 would request a checkpoint by >> calling cr_request_fd() , and cr_checkpoint() in the Callback. Since, >> cr_request_fd() will obsoleted in 0.8.0, I modified my code to call >> cr_request_checkpoint() - cr_wait_checkpoint() - cr_reap_checkpoint(), >> and cr_checkpoint() in the Callback. This scheme seems to work in >> 0.8.0_b5. However, cr_wait_checkpoint() & cr_reap_checkpoint() are not >> available in 0.7.1. This forces me to migrate to 0.8.0. I would like >> to know if there is some implementation that would work on both 0.7.1 >> and 0.8.0. >> >> Thanks & Regards, >> Karthik >> > > > -- > Paul H. Hargrove PHHargrove_at_lbl_dot_gov > Future Technologies Group Tel: +1-510-495-2352 > HPC Research Department Fax: +1-510-486-6900 > Lawrence Berkeley National Laboratory >