# Memory issue in OBC DMRG calculation

**URL:** <https://itensor.discourse.group/t/memory-issue-in-obc-dmrg-calculation/1021>\
**Category:** DMRG and Numerical Methods\
**Created:** [July 15, 2023, 8:34pm UTC](https://itensor.discourse.group/t/memory-issue-in-obc-dmrg-calculation/1021 "2023-07-15T20:34:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sunny](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@Sunny](https://itensor.discourse.group/u/Sunny)\
**Post date:** [July 15, 2023, 8:34pm UTC](https://itensor.discourse.group/t/memory-issue-in-obc-dmrg-calculation/1021/1 "2023-07-15T20:34:06Z")

</div>

Hi,

I am facing some problems with the memory requirements to do DMRG on my system near a multicritical point. Basically there is huge entanglement in the system so the bond dimensions required are getting quite large, so large that they are going way beyond what I have at my disposal.  
Could anyone tell me some ways to circumvent this issue?  
Thanks.