if mulitnode api don't privide the "parameter queue mechanism",how can realized multi client access simultaneously server resource? For example, a test scene that have a server roler and two client roler. how dows roler server know message is from which client? Need user write a program to implement it(queue mechanism)? roler server: steps: - lava-wait ipv4 - ipdata=$(cat /tmp/lava_multi_node_cache.txt | cut -d = -f 2) .. roler client1: steps: - lava-send ipv4 ip=192 .. roler client2: steps: - lava-send ipv4 ip=193 .. from roler server , ipdata can't be sured 192 or 193.
Steve McIntyre steve.mcintyre@linaro.org 于2019年5月13日周一 下午9:03写道：
Hi Jack,
On Mon, May 13, 2019 at 06:17:32PM +0800, jack lu wrote:
The multinode function of "pass data between devices".Note: "The message data is stored in a cache file which will be overwritten
when the
next synchronisation call is made. Ensure that your scripts make use of
(or
copy aside) any MultiNode cache data before calling any other MultiNode
API
helpers that may clear the cache."
Does it mean follow example: roler1: .. steps: - lava-send ipv4 ip=192 - lava-send ipv4 ip=193 .. roler2: step2:
- lava-wait ipv4
- ipdata=$(cat /tmp/lava_multi_node_cache.txt | cut -d = -f 2) ..
After run, is content of roler2 ipdata 193?
It's likely, but there's no guarantee on that - you've given the jobs no way to synchronise to be sure. Depending on timing between the two test devices, you could get either 192 or 193.
Cheers,
Steve McIntyre steve.mcintyre@linaro.org http://www.linaro.org/ Linaro.org | Open source software for ARM SoCs