ACM SIGs have two kinds of relationships with events like workshops and conferences: sponsored and "in cooperation with". You can learn more about in-cooperation versus sponsorship.
The highest level relationship is sponsorship, and involves SIGHPC taking financial responsibility for the event. As you might imagine, we take sponsorship very seriously: if SIGHPC is a sponsor, it's because we think it is one of the best events in our community.
Learn about our sponsored conferences:
The annual SC Conference
The annual PASC Conference
The annual PPOPP Conference
The annual PEARC Conference