Cloud Infrastructure

AWS EC2 GPU token limit exceeded during language model evaluation

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Problem — Token‑limit failures during language‑model evaluation on AWS EC2 GPU instances When running a Hugging Face transformers evaluation pipeline on an EC2 GPU instance (e.g., p3.2xlarge, g5.12xlarge), the script aborts with errors such as: ValueError: Token indices sequence length is longer than the model maximum sequence length (max_length=2048). or RuntimeError: CUDA out of memory. Tried to allocate 12.3 GiB … Read more

Azure VM inference queue backlog after increasing API request load

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Problem – Inference Queue Backlog on Azure VMs after Load Surge After a traffic spike on the public API gateway, the AI inference microservice running on Azure Virtual Machines (or a VM Scale Set) began to accumulate requests in its internal queue. Symptoms observed: Latency grew from ~100 ms to > 30 seconds per prediction. API Gateway … Read more

Shard rebalancing fails in Docker container on Azure VM

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Shard Rebalancing Fails in Docker Container on Azure VM Problem Description A distributed AI training workload runs inside a Docker container on an Azure Virtual Machine. The storage layer is sharded (e.g., Milvus, Redis Cluster, or a custom file‑system). During normal operation the coordinator attempts to relocate shards to balance load, but the operation aborts … Read more

GCP Compute Engine intermittent DNS resolution failure

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Problem – Intermittent DNS Resolution Failures on GCP Compute Engine In a multi‑region AI training pipeline, Compute Engine instances in us-central1 and europe‑west1 rely on internal DNS names such as ml‑worker-01.c.my‑project.internal to exchange model checkpoints. During peak synchronization windows the following symptoms were observed: Python training workers raised socket.gaierror: [Errno -3] Temporary failure in name … Read more

Multimodal input misalignment after deploying to AWS EC2 from on-prem

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Problem Description A multimodal model (text + image) that runs flawlessly on an on‑premises GPU server produces misaligned predictions after being deployed to an AWS EC2 GPU‑optimized instance (e.g., p3.2xlarge or g4dn.xlarge). Typical symptoms observed in the logs are: RuntimeError: size mismatch, tensor A has 768 elements but tensor B has 1024 elements ValueError: Expected input batch … Read more

Azure VM webhook timeout during JMeter load test

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Problem – Webhook Timeout During JMeter Load Test on Azure VM During a performance benchmark, a JMeter test simulating 500 concurrent users sends HTTP POST webhook calls to an ASP.NET Core API hosted on IIS behind an Azure Load Balancer. The backend service processes each request in under 2 minutes and returns 200 OK, yet JMeter consistently … Read more