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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||||||
| 0001035 | OMNeT++ | command line tools | public | 2018-05-08 11:05 | 2018-06-20 09:13 | ||||||||
| Reporter | cavka | ||||||||||||
| Assigned To | andras | ||||||||||||
| Priority | normal | Severity | minor | Reproducibility | always | ||||||||
| Status | feedback | Resolution | open | ||||||||||
| Platform | x86_64 | OS | GNU/Linux | OS Version | ? | ||||||||
| Product Version | 5.0 | ||||||||||||
| Target Version | Fixed in Version | ||||||||||||
| Summary | 0001035: scavetool rounds numbers in scalar outputs | ||||||||||||
| Description | After finishing longer simulations, processing of scalar results with scavetool produces really round numbers. These numbers were at least 7 digits long, so any higher integers were rounded in the last or in the last two digits. | ||||||||||||
| Steps To Reproduce | Simulate network long enough to obtain an at least seven digit number for a counter of e.g. received or sent packets. | ||||||||||||
| Tags | No tags attached. | ||||||||||||
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(0001364) andras (administrator) 2018-06-20 09:13 |
Unable to reproduce, please give more specific information. Scavetool indeed loses some precision because it reads scalars into doubles not int64_t or some other suitably large integer. double only has a 52-bit mantissa, not enough to precisely store integers >2^52. However, precision loss only starts around digit 17 or so, not after 7 digits. The default output precision is currently 14, which could indeed be higher. Some cursory tests. Input scalar file: version 2 run PureAlohaExperiment-20180611-16:04:39-6456 scalar Aloha.server long 1234567 scalar Aloha.server loong 12345678 scalar Aloha.server looong 123456789 scalar Aloha.server loooong 1234567891 scalar Aloha.server looooong 12345678912 scalar Aloha.server loooooong 123456789123 scalar Aloha.server looooooong 1234567891234 scalar Aloha.server loooooooong 12345678912345 scalar Aloha.server looooooooong 123456789123456 scalar Aloha.server loooooooooong 1234567891234567 scalar Aloha.server looooooooooong 12345678912345678 scalar Aloha.server loooooooooooong 123456789123456789 scalar Aloha.server looooooooooooong 1234567891234567891 scalar Aloha.server loooooooooooooong 12345678912345678912 command: scavetool x x.sca -o x.csv output: Exported 14 scalars run,type,module,name,attrname,attrvalue,value PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,long,,,1234567 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loong,,,12345678 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looong,,,123456789 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooong,,,1234567891 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooong,,,12345678912 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooong,,,123456789123 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooong,,,1234567891234 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooong,,,12345678912345 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooong,,,1.2345678912346e+14 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooong,,,1.2345678912346e+15 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooooong,,,1.2345678912346e+16 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooooong,,,1.2345678912346e+17 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooooooong,,,1.2345678912346e+18 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooooooong,,,1.2345678912346e+19 Using increased output precision: scavetool x x.sca -o x.csv -x precision=16 Output: run,type,module,name,attrname,attrvalue,value PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,long,,,1234567 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loong,,,12345678 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looong,,,123456789 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooong,,,1234567891 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooong,,,12345678912 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooong,,,123456789123 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooong,,,1234567891234 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooong,,,12345678912345 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooong,,,123456789123456 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooong,,,1234567891234567 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooooong,,,1.234567891234568e+16 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooooong,,,1.234567891234568e+17 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,looooooooooooong,,,1.234567891234568e+18 PureAlohaExperiment-20180611-16:04:39-6456,scalar,Aloha.server,loooooooooooooong,,,1.234567891234568e+19 |
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Issue History |
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| Date Modified | Username | Field | Change |
| 2018-05-08 11:05 | cavka | New Issue | |
| 2018-06-20 09:13 | andras | Note Added: 0001364 | |
| 2018-06-20 09:13 | andras | Assigned To | => andras |
| 2018-06-20 09:13 | andras | Status | new => feedback |
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Issue History |
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