Meeting on February 19, 2014

Table of Contents

• Agenda
• Minutes

Review Meetings Page

Agenda

• walk through gstlal_matrixmixer

Minutes

• walked through gstlal_matrixmixer.h header file and static functions gstlal_matrixmixer_class_init and transform in gstlal_matrixmixer.c

Actions

• Jolien to write a unit test code for lal_checktimestamps

• Chad has taken a stab at something that might help and checked it into gstlal/gstlal/tests. This test program dynamically adds a one nanosecond time shift every time the user hits ctrl+C. You need to do kill -9 to stop the program ;) Here is an example session

    $ ./lal_checktimestamps_test_01.py 
    src (00:00:05): 5 seconds
    ^Cshifting by 1 ns
    lal_checktimestamps+lal_checktimestamps0: got timestamp 7.000666617 s expected 7.000666616 s (discont flag is not set)
    ^Cshifting by 2 ns
    src (00:00:10): 10 seconds
    lal_checktimestamps+lal_checktimestamps0: got timestamp 10.000666618 s expected 10.000666617 s (discont flag is not set)
    lal_checktimestamps+lal_checktimestamps0: timestamp/offset mismatch:  got timestamp 10.000666618 s, buffer offset 20480 corresponds to timestamp 10.000666616 s (error = 2 ns)
    lal_checktimestamps+lal_checktimestamps0: timestamp/offset mismatch:  got timestamp 11.000666618 s, buffer offset 22528 corresponds to timestamp 11.000666616 s (error = 2 ns)  
  

  Note how the first ctrl+C only gives a warning since 1 ns is within the "fuzz". But after the second ctrl+C there is an error. If this test is useful we can add it to the lal_checktimestamps documentation directly.

Notes:

• N/A