GWAN浮点异常

Question

When trying to run GWAN on Ubuntu 12.04 LTS I sometimes get the "Floating point exception" error. Sometimes it will happen many times in a row, and it can start and run fine a few times in a row. But it always happens now and then, seems to be random..

Answer 1

Nagi's questions above are relevant: it would help to know under which conditions you are using G-WAN.

The link Nagi provided is also relevant but if you were facing a script error then the crash would be constant.

There's another known case which may lead to an erratic floating point error at startup, and that's hypervisors .

You are most probably experiencing the second case, for which workarounds have been implemented in May last year ( G-WAN v4.5+ ).

Taking place between the hardware and the OS, many hypervisors are breaking the CPU description reported by the Linux kernel, and they also happen to break CPU features(!) and system features like timers, memory allocation, etc.

In short, you are likely to use G-WAN v4.3.28 and need to upgrade to a more recent release. We give more recent releases to registered users and people who contribute to the project with code, ideas, etc.

The next public release will be make available after our G-WAN-based Cloud services are shipped (later this year).