Hi,

We have a MAL function and we are trying to use tomograph to profile the execution of it when it is executed on a remote node. However, the tomograph fails right after the function is executed. We are just wondering if we did something wrong and if tomograph can work with a remote function call.

Here's what we want to do:

From node A, we run a MAL function, which will execute a MAL function on both node A and node B using remote.exec() method.

Here's what we did and what happened:

1. in A start mclient

2. in A and B, start tomograph "tomograph -d db1 -h localhost"

3. in A, start the driver function, which will call remote.exec for the MAL function on both A and B

Then, in A and B, tomograpg exits promptly

ubuntu@MC-MoDB1:~->tomograph -d db1 -h localhost

-- opened UDP profile stream MC-MoDB1:50010 for localhost

Created tomogram 'tomograph'

Run: 'gnuplot tomograph.gpl' to create the 'tomograph.pdf' file

The memory map is stored in 'tomograph.dat'

The trace is saved in 'tomograph.trace' for use with --trace option

Looking at the tomograph trace file generated on node B, we have something like:

9 1430 18111 17039 71 71 2 0 0 remote.connect "X_22 := remote.connect(\"mapi:monetdb://192.168.4.4:50000/db1\",\"monetdb\",\"monetdb\",\"msql\");", ]

11 1007 10501 9496 70 71 2 0 0 remote.connect "X_24 := remote.connect(\"mapi:monetdb://192.168.5.4:50000/db1\",\"monetdb\",\"monetdb\",\"msql\");", ]

69 23408 23605 198 72 72 2 0 0 remote.bintype "remote.bintype();", ]

11 10867 10867 0 71 71 5 0 0 profiler.wait 0.00 0.04 0.75 0.00 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.01 0.25 0.00 0.00 0.00 0.00 0.00

9 18497 18497 0 71 71 5 0 0 profiler.wait 0.00 0.04 0.75 0.00 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.01 0.25 0.00 0.00 0.00 0.00 0.00

69 23978 23978 0 72 72 4 0 0 profiler.ping 0.00 0.04 0.75 0.00 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.25 0.01 0.25 0.00 0.00 0.00 0.00 0.00

================================

on node A, the tomograph trace file looks like:

4 327 453 127 66 66 2 0 0 remote.bintype "remote.bintype();", ]

4 684 684 0 66 66 4 0 0 profiler.ping 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.17 0.15 0.15 0.15 0.15 0.15 0.17 0.15 0.25 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.20 0.17 0.15 0.15 0.15 0.15 0.15

================================

Any help would be appreciated!

Thanks,

Mengmeng