We’re moving the GATK website, docs and forum to a new platform. Read the full story and breakdown of key changes on this blog.
If you happen to see a question you know the answer to, please do chime in and help your fellow community members. We encourage our fourm members to be more involved, jump in and help out your fellow researchers with their questions. GATK forum is a community forum and helping each other with using GATK tools and research is the cornerstone of our success as a genomics research community.We appreciate your help!
Test-drive the GATK tools and Best Practices pipelines on Terra
Check out this blog post to learn how you can get started with GATK and try out the pipelines in preconfigured workspaces (with a user-friendly interface!) without having to install anything.
We will be out of the office for a Broad Institute event from Dec 10th to Dec 11th 2019. We will be back to monitor the GATK forum on Dec 12th 2019. In the meantime we encourage you to help out other community members with their queries.
Thank you for your patience!
CombineGVCFs subsampling questions
I want to merge ~3000 HC outputs into one large cohort. However, even I run it directly by scattering on 30M genome chunk, it would still take a long time to compute. So I think I should first merge them to several small cohorts and then merge all small cohorts.
I had a subsampling test, a group of 300 samples v.s. 10 groups of 30 samples. However, the outputs are different in md5sum after excluding the header. I could understand that CombineGVCFs outputs have some cohort information, but I'm wondering how much they would matter in downstream VQSR pipeline, and how important they are.