When the network port recovers from a fault, the corresponding rank cannot receive the groupupdate message, resulting in the failure to join the group normally,rpc msg OOG.


We tried the mercury demo and found that initializing hg can solve this OOG problem,
and then analyzed the code of the cart,
and found that the cart context applied a global context, and it is used by all other ranks rpc msg.

When we want to initialize the cart context for a rank, instead of all ranks,what can we do?

struct dss_module_info {
    crt_context_t       dmi_ctx;

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