Output Memory and CPU on all nodes

Hi,

Is there a way to output the memory and CPU for all nodes? Is there an isi command that I can run? Some of the basic Linux commands are not available which I could have used with the isi_for_array command. I also didn't see anything within the /proc/meminfo. Would be great if glances was installed. I know I can ssh into each node. Just would be nice if I can run the isi command to give me a list acroos all nodes. I checked InsightIQ, but it only gives me information on the Average CPU Usage not anything regarding to memory. Any help would greatly be appreciated

Thanks,