# FAILED ASSERTION (hardware): (hardware.c:625) error while reading list of online CPUs **URL:** \ **Category:** General Discussion\ **Created:** [January 16, 2019, 4:49pm UTC](https://discuss.aerospike.com/t/failed-assertion-hardware-hardware-c-625-error-while-reading-list-of-online-cpus/5859 "2019-01-16T16:49:26Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![tlo](https://avatars.discourse-cdn.com/v4/letter/t/4da419/32.png) [@tlo](https://discuss.aerospike.com/u/tlo)\ **Post date:** [January 17, 2019, 8:09am UTC](https://discuss.aerospike.com/t/failed-assertion-hardware-hardware-c-625-error-while-reading-list-of-online-cpus/5859/2 "2019-01-17T08:09:39Z")
Hi there, Thank you for sharing all these details! I’m sorry to hear that you’ve run into trouble running Aerospike. This looks a lot like the following issue: > [@Aerospike doesn't start](https://discuss.aerospike.com/t/aerospike-doesnt-start/4942): > > Hello, I just tried to install Aerospike on my VServer running Ubuntu 16.04. After following the installation guide, the daemon does not start, and the following error occurs: FAILED ASSERTION (hardware): (hardware.c:422) error while reading list of online CPUs I googled a lot but cannot find any solution. From what I’ve learned Aerospike tries to check how many CPUs are online, however, that info is only available if the system supports hotplugging of CPUs. Which mine apparently doesn’t, sinc… I assume that you don’t operate the host operating system, just the OpenVZ guest, right? In this case, I’m afraid, we won’t be able to fix this issue by way of a kernel reconfiguration, as the kernel would have to be reconfigured on the host operation system. Sorry that I don’t have better news. Thomas --- _[View the full topic](https://discuss.aerospike.com/t/failed-assertion-hardware-hardware-c-625-error-while-reading-list-of-online-cpus/5859)._