diff --git a/src/ptr_graph_cache/ptr_graph_cache.c b/src/ptr_graph_cache/ptr_graph_cache.c
deleted file mode 100644
index cbf81bf7..00000000
--- a/src/ptr_graph_cache/ptr_graph_cache.c
+++ /dev/null
@@ -1,204 +0,0 @@
-// Copyright (c) Epic Games Tools
-// Licensed under the MIT license (https://opensource.org/license/mit/)
-
-////////////////////////////////
-//~ rjf: Main Layer Initialization
-
-internal void
-ptg_init(void)
-{
-  Arena *arena = arena_alloc();
-  ptg_shared = push_array(arena, PTG_Shared, 1);
-  ptg_shared->arena = arena;
-  ptg_shared->slots_count = 1024;
-  ptg_shared->stripes_count = Min(ptg_shared->slots_count, os_get_system_info()->logical_processor_count);
-  ptg_shared->slots = push_array(arena, PTG_GraphSlot, ptg_shared->slots_count);
-  ptg_shared->stripes = push_array(arena, PTG_GraphStripe, ptg_shared->stripes_count);
-  for(U64 idx = 0; idx < ptg_shared->stripes_count; idx += 1)
-  {
-    ptg_shared->stripes[idx].arena = arena_alloc();
-    ptg_shared->stripes[idx].rw_mutex = rw_mutex_alloc();
-    ptg_shared->stripes[idx].cv = cond_var_alloc();
-  }
-  ptg_shared->u2b_ring_size = KB(64);
-  ptg_shared->u2b_ring_base = push_array_no_zero(arena, U8, ptg_shared->u2b_ring_size);
-  ptg_shared->u2b_ring_cv = cond_var_alloc();
-  ptg_shared->u2b_ring_mutex = mutex_alloc();
-  ptg_shared->builder_thread_count = Clamp(1, os_get_system_info()->logical_processor_count-1, 4);
-  ptg_shared->builder_threads = push_array(arena, Thread, ptg_shared->builder_thread_count);
-  for(U64 idx = 0; idx < ptg_shared->builder_thread_count; idx += 1)
-  {
-    ptg_shared->builder_threads[idx] = thread_launch(ptg_builder_thread__entry_point, (void *)idx);
-  }
-  ptg_shared->evictor_thread = thread_launch(ptg_evictor_thread__entry_point, 0);
-}
-
-////////////////////////////////
-//~ rjf: Cache Lookups
-
-internal PTG_Graph *
-ptg_graph_from_key(Access *access, PTG_Key *key)
-{
-  PTG_Graph *g = 0;
-  return g;
-}
-
-////////////////////////////////
-//~ rjf: Transfer Threads
-
-internal B32
-ptg_u2b_enqueue_req(PTG_Key *key, U64 endt_us)
-{
-  B32 good = 0;
-  MutexScope(ptg_shared->u2b_ring_mutex) for(;;)
-  {
-    U64 unconsumed_size = ptg_shared->u2b_ring_write_pos-ptg_shared->u2b_ring_read_pos;
-    U64 available_size = ptg_shared->u2b_ring_size-unconsumed_size;
-    if(available_size >= sizeof(key))
-    {
-      good = 1;
-      ptg_shared->u2b_ring_write_pos += ring_write_struct(ptg_shared->u2b_ring_base, ptg_shared->u2b_ring_size, ptg_shared->u2b_ring_write_pos, &key);
-      break;
-    }
-    if(os_now_microseconds() >= endt_us)
-    {
-      break;
-    }
-    cond_var_wait(ptg_shared->u2b_ring_cv, ptg_shared->u2b_ring_mutex, endt_us);
-  }
-  if(good)
-  {
-    cond_var_broadcast(ptg_shared->u2b_ring_cv);
-  }
-  return good;
-}
-
-internal void
-ptg_u2b_dequeue_req(PTG_Key *key_out)
-{
-  MutexScope(ptg_shared->u2b_ring_mutex) for(;;)
-  {
-    U64 unconsumed_size = ptg_shared->u2b_ring_write_pos-ptg_shared->u2b_ring_read_pos;
-    if(unconsumed_size >= sizeof(*key_out))
-    {
-      ptg_shared->u2b_ring_read_pos += ring_read_struct(ptg_shared->u2b_ring_base, ptg_shared->u2b_ring_size, ptg_shared->u2b_ring_read_pos, key_out);
-      break;
-    }
-    cond_var_wait(ptg_shared->u2b_ring_cv, ptg_shared->u2b_ring_mutex, max_U64);
-  }
-  cond_var_broadcast(ptg_shared->u2b_ring_cv);
-}
-
-internal void
-ptg_builder_thread__entry_point(void *p)
-{
-  for(;;)
-  {
-    Access *access = access_open();
-    
-    //- rjf: get next key
-    PTG_Key key = {0};
-    ptg_u2b_dequeue_req(&key);
-    
-    //- rjf: unpack hash
-    U64 slot_idx = key.root_hash.u64[1]%ptg_shared->slots_count;
-    U64 stripe_idx = slot_idx%ptg_shared->stripes_count;
-    PTG_GraphSlot *slot = &ptg_shared->slots[slot_idx];
-    PTG_GraphStripe *stripe = &ptg_shared->stripes[stripe_idx];
-    
-    //- rjf: take task
-    B32 got_task = 0;
-    MutexScopeR(stripe->rw_mutex)
-    {
-      for(PTG_GraphNode *n = slot->first; n != 0; n = n->next)
-      {
-        if(MemoryMatchStruct(&n->key, &key))
-        {
-          got_task = !ins_atomic_u32_eval_cond_assign(&n->is_working, 1, 0);
-          break;
-        }
-      }
-    }
-    
-    //- rjf: do task
-    if(got_task)
-    {
-      
-    }
-    
-    //- rjf: commit results to cache
-    if(got_task) MutexScopeW(stripe->rw_mutex)
-    {
-      for(PTG_GraphNode *n = slot->first; n != 0; n = n->next)
-      {
-        if(MemoryMatchStruct(&n->key, &key))
-        {
-          
-          ins_atomic_u32_eval_assign(&n->is_working, 0);
-          ins_atomic_u64_inc_eval(&n->load_count);
-          break;
-        }
-      }
-    }
-    
-    access_close(access);
-  }
-}
-
-////////////////////////////////
-//~ rjf: Evictor Threads
-
-internal void
-ptg_evictor_thread__entry_point(void *p)
-{
-#if 0
-  for(;;)
-  {
-    U64 check_time_us = os_now_microseconds();
-    U64 check_time_user_clocks = ptg_user_clock_idx();
-    U64 evict_threshold_us = 10*1000000;
-    U64 evict_threshold_user_clocks = 10;
-    for(U64 slot_idx = 0; slot_idx < ptg_shared->slots_count; slot_idx += 1)
-    {
-      U64 stripe_idx = slot_idx%ptg_shared->stripes_count;
-      PTG_GraphSlot *slot = &ptg_shared->slots[slot_idx];
-      PTG_GraphStripe *stripe = &ptg_shared->stripes[stripe_idx];
-      B32 slot_has_work = 0;
-      MutexScopeR(stripe->rw_mutex)
-      {
-        for(PTG_GraphNode *n = slot->first; n != 0; n = n->next)
-        {
-          if(n->scope_ref_count == 0 &&
-             n->last_time_touched_us+evict_threshold_us <= check_time_us &&
-             n->last_user_clock_idx_touched+evict_threshold_user_clocks <= check_time_user_clocks &&
-             n->load_count != 0 &&
-             n->is_working == 0)
-          {
-            slot_has_work = 1;
-            break;
-          }
-        }
-      }
-      if(slot_has_work) MutexScopeW(stripe->rw_mutex)
-      {
-        for(PTG_GraphNode *n = slot->first, *next = 0; n != 0; n = next)
-        {
-          next = n->next;
-          if(n->scope_ref_count == 0 &&
-             n->last_time_touched_us+evict_threshold_us <= check_time_us &&
-             n->last_user_clock_idx_touched+evict_threshold_user_clocks <= check_time_user_clocks &&
-             n->load_count != 0 &&
-             n->is_working == 0)
-          {
-            DLLRemove(slot->first, slot->last, n);
-            arena_clear(n->arena);
-            SLLStackPush(stripe->free_node, n);
-          }
-        }
-      }
-      os_sleep_milliseconds(5);
-    }
-    os_sleep_milliseconds(1000);
-  }
-#endif
-}
diff --git a/src/ptr_graph_cache/ptr_graph_cache.h b/src/ptr_graph_cache/ptr_graph_cache.h
deleted file mode 100644
index cc30be76..00000000
--- a/src/ptr_graph_cache/ptr_graph_cache.h
+++ /dev/null
@@ -1,186 +0,0 @@
-// Copyright (c) Epic Games Tools
-// Licensed under the MIT license (https://opensource.org/license/mit/)
-
-#ifndef PTR_GRAPH_CACHE_H
-#define PTR_GRAPH_CACHE_H
-
-////////////////////////////////
-//~ rjf: Graph Search Key
-
-typedef struct PTG_Key PTG_Key;
-struct PTG_Key
-{
-  U128 root_hash;
-  U64 link_offsets[8];
-  U64 link_offsets_count;
-};
-
-////////////////////////////////
-//~ rjf: Cache Types
-
-typedef struct PTG_Node PTG_Node;
-struct PTG_Node
-{
-  U64 value;
-};
-
-typedef struct PTG_Link PTG_Link;
-struct PTG_Link
-{
-  U32 from;
-  U32 to;
-};
-
-typedef struct PTG_NodeChunkNode PTG_NodeChunkNode;
-struct PTG_NodeChunkNode
-{
-  PTG_NodeChunkNode *next;
-  PTG_Node *v;
-  U64 count;
-  U64 cap;
-};
-
-typedef struct PTG_NodeChunkList PTG_NodeChunkList;
-struct PTG_NodeChunkList
-{
-  PTG_NodeChunkNode *first;
-  PTG_NodeChunkNode *last;
-  U64 chunk_count;
-  U64 total_count;
-};
-
-typedef struct PTG_NodeArray PTG_NodeArray;
-struct PTG_NodeArray
-{
-  PTG_Node *v;
-  U64 count;
-};
-
-typedef struct PTG_LinkChunkNode PTG_LinkChunkNode;
-struct PTG_LinkChunkNode
-{
-  PTG_LinkChunkNode *next;
-  PTG_Link *v;
-  U64 count;
-  U64 cap;
-};
-
-typedef struct PTG_LinkChunkList PTG_LinkChunkList;
-struct PTG_LinkChunkList
-{
-  PTG_LinkChunkNode *first;
-  PTG_LinkChunkNode *last;
-  U64 chunk_count;
-  U64 total_count;
-};
-
-typedef struct PTG_LinkArray PTG_LinkArray;
-struct PTG_LinkArray
-{
-  PTG_Link *v;
-  U64 count;
-};
-
-typedef struct PTG_Graph PTG_Graph;
-struct PTG_Graph
-{
-  PTG_NodeArray nodes;
-  PTG_LinkArray links;
-};
-
-typedef struct PTG_GraphNode PTG_GraphNode;
-struct PTG_GraphNode
-{
-  // rjf: links
-  PTG_GraphNode *next;
-  PTG_GraphNode *prev;
-  
-  // rjf: key
-  PTG_Key key;
-  
-  // rjf: metadata
-  U64 scope_ref_count;
-  U64 last_time_touched_us;
-  U64 last_user_clock_idx_touched;
-  U64 load_count;
-  B32 is_working;
-  
-  // rjf: content
-  Arena *arena;
-  PTG_Graph graph;
-};
-
-typedef struct PTG_GraphSlot PTG_GraphSlot;
-struct PTG_GraphSlot
-{
-  PTG_GraphNode *first;
-  PTG_GraphNode *last;
-};
-
-typedef struct PTG_GraphStripe PTG_GraphStripe;
-struct PTG_GraphStripe
-{
-  Arena *arena;
-  RWMutex rw_mutex;
-  CondVar cv;
-  PTG_GraphNode *free_node;
-};
-
-////////////////////////////////
-//~ rjf: Shared State
-
-typedef struct PTG_Shared PTG_Shared;
-struct PTG_Shared
-{
-  Arena *arena;
-  
-  // rjf: cache
-  U64 slots_count;
-  U64 stripes_count;
-  PTG_GraphSlot *slots;
-  PTG_GraphStripe *stripes;
-  
-  // rjf: user -> xfer thread
-  U64 u2b_ring_size;
-  U8 *u2b_ring_base;
-  U64 u2b_ring_write_pos;
-  U64 u2b_ring_read_pos;
-  CondVar u2b_ring_cv;
-  Mutex u2b_ring_mutex;
-  
-  // rjf: builder threads
-  U64 builder_thread_count;
-  Thread *builder_threads;
-  
-  // rjf: evictor thread
-  Thread evictor_thread;
-};
-
-////////////////////////////////
-//~ rjf: Globals
-
-global PTG_Shared *ptg_shared = 0;
-
-////////////////////////////////
-//~ rjf: Main Layer Initialization
-
-internal void ptg_init(void);
-
-////////////////////////////////
-//~ rjf: Cache Lookups
-
-internal PTG_Graph *ptg_graph_from_key(Access *access, PTG_Key *key);
-
-////////////////////////////////
-//~ rjf: Transfer Threads
-
-internal B32 ptg_u2b_enqueue_req(PTG_Key *key, U64 endt_us);
-internal void ptg_u2b_dequeue_req(PTG_Key *key_out);
-internal void ptg_builder_thread__entry_point(void *p);
-
-////////////////////////////////
-//~ rjf: Evictor Threads
-
-internal void ptg_evictor_thread__entry_point(void *p);
-
-#endif // PTR_GRAPH_CACHE_H