Hi Syed

Please be aware that the SLSpiHost process is not an important/critical process for the good/correct functioning of your Dataminer system. It's an "optional" process.

This process facilitates the publishing and receiving of SPI data.
SPI - System Performance Indicator
These provide information about the system and are meant to make investigations easier.

This issue is often seen just after starting up dataminer, the root cause might be that NAS/NATS was not running yet. This specific issue should be resolved in the an early CU of the 10.2 release branch.
Obviously there will be other causes, but we'd need that LogCollector package as Danielle indicated.